Name: preventing lab electric shock and fires
Uploaded: 2023-04-30T06:56:27.000Z
Duration: 4 min 53 s
Channel: JoVE

K12 Standards

Texas Essential Knowledge and Skills

High School

Specialised Topic in Science

112.51.c.1.

112.51.c.1.C.

Electrical Safety

1 です。 電気危険に備えて <ol><li>研究所電気コントロール パネルの場所に精通していると緊急の場合電源をシャット ダウンする方法を知っています。研究室でブレーカーを探し、回路に接続されている電化機器を識別します。すべて遮断する必要があります適切に分類されるが、研究領域や特定の機器を識別する関連付けられている</li>。
	<li>タイプと電気火災の場合の消火器の場所に精通しています。電気火災 (クラス C 火災とも呼ばれる) は、炭酸ガスを含む消火器を必要とします。消火器の場所は、場所を指す矢印の付いたオーバーヘッドやフロア看板マーク必要があります。OSHA によると消火器の適切な使用のための 4 つの主要ステップ、 3: a. P ull ピン 。
	im は b. 火の底部に向けてノズル 。
	c. S 貰ったもの・ エージェントのリリースを制御するトリガーします 。
	d. S 泣く左右にします</li>。
	<li>は、定期的にすべての機器とその関連付けられた内部と周辺のワイヤーでは、首相の労働条件を確保するすべての研究室電気機器を検査します。任意の線の状態が悪い場合、修理または交換修飾された電気技師によってそれらがあります。楽器に関連付けられているログ本で提供される、調査の結果、このタスクに割り当てられているグループのメンバーに有利なことがあります</li>。
</ol> 2。電気ショックを回避する <ol><li>濡れた手で電化製品をタップするか、材料を濡らすことです</li>。
	<li>は、電源投入の前に、すべての電源ケーブルが行き届いていることを確認します。擦り切れているケーブルまたは露出されたワイヤーを使用しないでください。修理または修飾された電気技師によって交換コードを持っている</li>。
	<li>腐食性薬品およびワイヤーの絶縁材の侵食を避けるために有機溶媒からワイヤを維持します</li>。
	<li>は、破損してしまったソケット、プラグ、およびすぐにそれ以上の損傷を避けるためにジョイントを取り付けます。それは適合しませんをソケットにプラグを強制的にしないでください</li>。
	<li>は電源をシャット ダウンし、電気機器のカバーを開く前に電源コードを抜きます。いくつかのコンデンサーは、カバーの取り外し後も時間にまだ課金があることに注意してください</li>。
	<li>は、ラボでのプラグの接地装置を使用します。ラボ機器に使用される主なプラグ、アース、安全地面、地面、安全と保安接地とニュートラルと三相タップ単相が中央で三相と単相があります。しないで力プラグ ソケットに。彼らが適切な仲間であることを確認します</li>。
	<li>は、パソコンまたは一時的に使用を除いて永久的なラボ用延長コードを使用しないでください。電圧スパイクから電子機器を保護するために、サージ プロテクターを使用します。回避 &#34; デイジー チェーン &#34; 拡張機能のコードします</li>。
	<li>は、決して未知の電気問題の修復のリスクを取る。検査または不明な電気問題を修復する修飾された電気労働者を求める</li>。
	<li>電気地面に到達するための導管として機能するので電気ショックを受けて人に触れないでください。すぐに 911 を呼び出します。まずあなたの安全を確保可能であれば、電源をシャット ダウンするか、木材、ガラス、ゴムなどの非導べ電性の材料を使用して、電気接点から人を引っ張る</li>。
</ol> 3。電気火災や爆発を回避する <ol><li>ドン &#39; t 回路をオーバー ロードします。回路がオーバー ロードされた場合、実際の電力、電流、および電圧が定格値を超えるし、火災に 。現在回路の負荷が描画を推奨最大値を超えたかどうかを決定することができます人と評価値を決定することができる場合を参照してください</li>。
	<li>ストアの可燃性および爆発性の化学物質の電気機器から離れて。近くに可燃性、爆発性の化学物質で火災や爆発電気機器によって発生する火花することがあります</li>。
	<li>すべての電気機器は、溶かすと電気火災を防ぐためにホット ポイント ソース (すなわち、開いた炎) から離れていることを確認します</li>。
	<li>電気火災には、まず地域を離れるし、すぐに 911 を呼び出します。最も便利な火災警報を引っ張るし、安全かつ可能な場合に、メイン電源をシャット ダウンします。水や導電性泡消火器を使用しないでください。代わりに砂または炭酸ガス消火器使用します</li>。
</ol> <div class="chapter_text"id="script_0"> 電気機器の安全な取り扱い化学物質の処理と同様に重要です、しかし、電気機器の危険の性質は頻繁に見落とされる。電気駆動装置の不適切な操作は、感電による傷害または死に潜在的につながる可能性があります。さらに、実験室で電気火花が火災や爆発、引火性の高いときに特にする可能性がありますまたは潜在的に爆発性の化学物質が近くに置かれています。電気事故の防止を含む電気配線の検査状況認識や化学物質、および水からの距離で電源コードを守るします。このビデオは電動デバイスを使用する前に必要な注意事項を説明、手順防止や衝撃による事故と電気火災を処理するために使用します。</div> <div class="chapter_text"id="script_1"> あらゆる電気装置を投入する前に良好な状態では、電源コードを確認します。擦り切れているケーブルまたは露出されたワイヤーで、デバイスを使用しないでください。は、デバイスがある丈夫な表面散乱や落下防止の残骸から無料になっていることを確認します。さらに、電源コンセントから安全な距離で可燃性、腐食性の化学薬品を維持します。はデバイスをシャット ダウンする必要がある場合に、遮断電気緊急およびサーキット ・ ブレーカー ボックスを理解します。各コンセントが接続されている回路を正しくラベルします。配線条件をチェックして、定期的にすべての研究室電気機器を検査します。経験豊富なスタッフがすぐに交換部品がある破損したワイヤまたは欠陥のあるデバイスの場合</div>。<div class="chapter_text"id="script_2"> 電気ショックを防ぐためには、水で満たされたシンクや浴槽から離れて接続されているデバイスを維持し、それらをぬれた手で触れないでください。はさらに、接地プラグ 。 装備のみ電動デバイスを使用します。不似合いソケットにプラグを強制することを避けるため、破損したソケットまたはプラグ交換します。常に電圧スパイクから電子機器を保護するためにサージ プロテクターを使用し、決して永久的な実験装置の延長コードを使用します。</div> <div class="chapter_text"id="script_3"> 可燃性物質との接触によってがオーバー ロードされた回路 . 電気火災を発生可能性がありますアウトレットでは、2 つ以上の電気機器を使用して、またはサージ プロテクターを使用してオーバー ロードを防ぐために。また、ワイヤの溶融を避けるために火気から電気機器を維持します。は常に消火器の場所を知っています。小型の電気火災 CO2 消火器や砂を使用します。消火器を使用する必要がある場合パス規則に従います。まずはピンを引き抜きます。その後、ノズルを取る目的に向かって火のベースと引き金を引く。ゆっくりと燃焼領域をカバーする側に側からノズルを掃引します。大規模な火災の場合火災報知、すぐに離れるし、911 を呼び出します。実験室労働者は電気ショックをされている場合は、電源は消灯し、911 を呼び出すことを確認します。地面に到達する電気のための導管として機能を避けるために素肌と被害者を触れないでください。常に木材、ガラスなどの非導べ電性の材料を使用して、または電気ショックを受けて人を助けるゴム。</div> <div class="chapter_text"id="script_4"> 電気安全のゼウスの紹介を見ただけ。電気安全の危険性に対するセーフガードを今理解する必要がありますどのように事故の場合覚悟する感電や電気火災を防ぐために行うもの。見てくれてありがとう!</div>

研究室では、電気機器があふれています。感電、電気火災または爆発を防ぐために電気安全原則に従うことが不可欠です。手順がどうあるべきかについて準備する緊急の場合で撮影します。識別し、研究室では、消火器の位置をマークします。必ずクラス C 火災用消火器を使用してください。最初個人の安全のために常に覚えている、場合、シャット ダウン、電源、誤動作している電気機器に安全な方法で行うことができます。

電気的安全性

ロバート ・ m ・ Rioux ・ Suprita Jharimune、ペンシルバニア州立大学、大学公園、PA
 研究室では、現在の多くの危険の間で電気的危険性である操作の最も一般的な我々 は、実験室のほとんどを認識しなければならないの使用する機器が電気を必要とします。不適切な取り扱いや電気機器の操作は傷害また更に死の潜在的なリスクと感電する可能性があります。(以来、多くの可燃性物質は、電化機器近くに保存可能性があります)、電気火花は火災または爆発する可能性があります。したがって、電気安全と緊急対処に関する知識は、研究者のために不可欠です。注意事項は、感電や電気火災や爆発を避けるために研究室で作業するときに使用できます。

Robert M. Rioux &amp; Suprita Jharimune, Pennsylvania State University, University Park, PA
Among the many hazards present in the laboratory, electrical ...

電気機器の安全な取り扱いは、化学物質の取り扱いと同じくらい重要ですが、電気機器の危険性は見過ごされがちです。電動機器の不適切な操作は、感電による怪我や死亡につながる可能性があります。さらに、実験室での電気火花は、特に可燃性が高いまたは爆発の可能性のある化学物質が近くに置かれている場合、火災や爆発につながる可能性があります。電気事故の防止には、電気配線の点検、電源コードを水や薬品から安全な距離に保つこと、状況認識が含まれます。このビデオでは、電動デバイスを使用する前に必要な注意事項と、衝撃関連の事故や電気火災を防止または処理するための手順について説明します。電気機器の電源を入れる前に、電源コードが良好な状態であることを確認してください。コードが擦り切れたり、ワイヤーが露出した状態でデバイスを使用しないでください。デバイスが落下しないように、デバイスが散らかったり破片が散らかったりしない頑丈な表面にあることを確認してください。さらに、可燃性および腐食性の化学物質は、コンセントから安全な距離に保管してください。緊急の電気遮断と、デバイスをシャットダウンする必要がある場合の回路ブレーカーボックスについて理解しておいてください。各コンセントが接続されている回路に適切にラベルを付けます。すべての実験室の電気機器は、配線条件を確認して定期的に検査してください。ワイヤーが損傷したり、デバイスに欠陥がある場合は、すぐに経験豊富な担当者に部品を交換してください。感電を防ぐため、プラグを差し込んだデバイスを水で満たされたシンクや浴槽から遠ざけ、濡れた手で触れないようにしてください。また、アースプラグを備えた電動デバイスのみを使用してください。プラグを不適切なソケットに無理に押し込むことは避け、損傷したソケットやプラグを交換してください。電圧スパイクから電気機器を保護するために常にサージプロテクタを使用し、恒久的な実験装置には延長コードを使用しないでください。電気火災は、可燃性化学物質との接触によって引き起こされるだけでなく、回路の過負荷によっても発生する可能性があります。コンセントごとに2つ以下の電気機器を使用するか、過負荷を防ぐためにサージプロテクタを使用してください。さらに、電線が溶けないように、電気機器を直火から遠ざけてください。消火器の位置を常に把握してください。小規模な電気火災の場合は、CO2消火器または砂を使用してください。消火器を使用する必要がある場合は、PASSルールに従ってください。最初にピンを引っ張ります。次に、ノズルを取り、火の根元に向け、引き金を握ります。ノズルをゆっくりと左右にスイープして、燃焼領域を覆います。大規模な火災が発生した場合は、火災警報器を鳴らし、すぐにその場を離れて911に電話してください。実験室の作業員が感電した場合は、電源がオフになっていることを確認し、911に電話してください。電気が地面に到達するための導管として機能しないように、被害者に素肌で触れないでください。感電した人を助けるために、常に木材、ガラス、ゴムなどの非導電性材料を使用してください。JoVEの電気安全の紹介をご覧になりました。これで、電気安全上の問題に対する保護手段、事故が発生した場合の準備方法、感電や電気火災を防ぐために何をすべきかを理解する必要があります。ご覧いただきありがとうございます!

Education

JoVE Science Education

Basic Biology

基礎生物学

Lab Safety

ラボの安全管理

preventing lab electric shock and fires

Electrical hazards are a common lab safety concern. Most laboratory equipment uses electricity to work, so students and lab staff must stay alert around cords, plugs, and powered devices. Improper use of electrical equipment can cause electric shock. In serious cases, this can lead to injury or death.

Electrical sparks are also dangerous in the lab. They can start a fire or trigger an explosion. This risk matters because many flammable chemicals may be stored near powered instruments. Knowing how to use electrical equipment safely, and how to respond in an emergency, is essential for preventing shock, fire, and explosion.

Preventing Lab Electric Shock and Fires

proper personal protective equipment

Choosing the Right Lab PPE

Choosing the right lab PPE is a key part of working safely in a laboratory. PPE, or personal protective equipment, helps reduce risk when hazards are present. Laboratory hazards can be many and varied. The right choice of PPE helps make the lab a safe place to work. Students should match their protective gear to the tasks and conditions in the lab. This topic focuses on selecting proper protection for the situation at hand. Wearing the correct PPE supports safer lab work and helps limit...

emergency eyewash and shower stations

Laboratory Chemical Spill Response Stations

Laboratory chemical spill response stations help protect people who are exposed to injurious or corrosive substances. In workplaces and school labs, OSHA requires emergency eyewash and shower stations to be easy to reach when these hazards are present. These stations are used after an accident that spills a harmful chemical on the body or splashes it into the eyes. The eyewash station helps rinse the eyes, while the shower station is used for chemicals on the skin or clothing. They are meant...

electrical safety

Electrical hazards are a common lab safety concern. Most laboratory equipment uses electricity to work, so students and lab staff must stay alert around cords, plugs, and powered devices. Improper use of electrical equipment can cause electric shock. In serious cases, this can lead to injury or death. Electrical sparks are also dangerous in the lab. They can start a fire or trigger an explosion. This risk matters because many flammable chemicals may be stored near powered instruments. Knowing...

working with centrifuges

Centrifuge Safety and Sample Separation

Centrifuges are used to separate heterogeneous mixtures by spinning particles in a fluid at high speed. The motion creates a force away from the axis of rotation. Heavier particles move faster toward the bottom of the sample holder, and the rate depends on particle size and density. This process is called centrifugation, and it speeds up sedimentation, which is the settling of particles out of a liquid. Gravity can separate some mixtures on its own, but that can take a long time.

working with hot and cold sources

Safe Use of Lab Heat and Cold Sources

Safe use of lab heat and cold sources is an important part of laboratory work. Extreme temperatures are common in many lab tasks. They can involve both high heat and very low temperatures. Bunsen burners and hot plates are widely used in research labs and industry. A Bunsen burner is a gas burner that gives a direct flame. A hot plate is an electric device that warms containers without an open flame. Because these tools reach high temperatures, users need to follow safe handling procedures. <br...

guidelines in case of a laboratory emergency

guidelines-in-case-of-a-laboratory-emergency

Lab Spill and Accident Response Basics

Lab spill and accident response basics help students stay safe during common laboratory emergencies. The most common lab emergencies include chemical spills, fire or explosion, electric shock, and personnel injuries. Many accidents happen because of poor planning or lack of attention, so prevention is always the first step. Good lab safety starts before an emergency happens. Students should wear proper personal protective equipment, or PPE, in the laboratory. Regular lab inspection and...

chemical storage: categories, hazards and compatibilities

chemical-storage-categories-hazards-and-compatibilities

Safe Chemical Labels and Storage Basics

Safe chemical storage and labeling help prevent dangerous reactions in school and research labs. Chemicals can vary widely in their properties and reactivity, so they must be managed, stored, and labeled correctly as part of an Environmental, Health and Safety (EHS) program. If chemicals are not handled properly, they can create harmful or even destructive results. These risks include toxic fume production, fire, explosion, human fatality, property damage, and environmental hazards. Proper...

safe handling of mineral acids

Mineral Acids in the Lab

Mineral acids are common chemicals in research laboratories, and they must be handled with care. These acids, also called inorganic acids, are water-soluble acids formed from inorganic minerals by chemical reaction. Their corrosive nature makes them a major safety risk in the lab. Examples of mineral acids include boric acid, chromic acid, hydrochloric acid, hydrofluoric acid, nitric acid, perchloric acid, phosphoric acid, and sulfuric acid. These acids are important reagents in research, and...

handling chemical spills

Chemical Spill Safety in the Lab

Chemical spill safety in the lab is essential whenever hazardous chemicals are used. Spills can happen at any time during laboratory work. Even a small spill can become dangerous if people are not prepared to respond quickly and correctly. Preparing for a chemical spill helps protect public health and the environment. Lab teams need to know how to respond to accidental releases of hazardous chemicals before an emergency happens. Safe cleanup also depends on proper disposal of the spilled...

proper use of autoclaves

Autoclaving Lab Materials Safely

Autoclaving lab materials safely is an important part of decontamination in the laboratory. This method is commonly used for items that have contacted biological samples, especially those that may contain microorganisms. An autoclave cleans materials with pressurized steam at a high temperature. The steam and heat work together to kill microorganisms on the loaded items. For this reason, effective autoclaving depends on good steam flow and strong heat transfer. Packaging matters because it...

fume hoods and laminar flow cabinets

Airflow Controls for Safer Lab Workspaces

Fume hoods and laminar flow cabinets are airflow controls used in laboratories. They both rely on a constant stream of air to protect the lab environment and the people in it. These systems work in similar ways, but they serve different purposes. A fume hood is a ventilation system that helps reduce exposure to hazardous vapors, fumes, and particles. Air is drawn into the hood opening, which helps keep harmful substances inside the workspace. The air is then pulled out through the exhaust. A...

handling air- and water-sensitive chemicals using a schlenk line

handling-air-and-water-sensitive-chemicals-using-a-schlenk-line

Schlenk Line Setup for Inert Atmospheres

A Schlenk line helps chemists work with air- and water-sensitive chemicals. It provides an air-free way to handle reagents that can react with oxygen or moisture. This makes it useful in a chemical laboratory when careful control of the atmosphere is needed. The glass apparatus is commonly used because it can create an inert gas environment or a vacuum. Inert gases such as nitrogen and argon can be used to protect the reaction. The same setup can also expose glassware to vacuum when needed. A...

proper operation of vacuum based equipment

proper-operation-of-vacuum-based-equipment

Vacuum Pumps for Laboratory Procedures

Vacuum pumps are used in many laboratory procedures that need low pressure. They help create vacuum conditions for experiments and equipment that must run below normal atmospheric pressure. In the lab, vacuum pumps are the most common way to achieve this low-pressure environment. They can also support rapid changes in the atmosphere inside a reactor or flask. This is done by evacuating the vessel and then backfilling it with another gas.

operating the glovebox

Glovebox Atmosphere and Sample Transfer

A glovebox is an enclosed workspace that keeps an inert atmosphere inside. Scientists use built-in gloves to handle chemicals or equipment without exposing the inside of the box to outside air. The box uses positive pressure to help make up for small passive leaks. Objects can be moved in and out through an antechamber, which works like an airlock between the glovebox and the outside atmosphere. Some gloveboxes have more than one pair of gloves. The number of glove ports depends on the size...

operation of high-pressure reactor vessels

operation-of-high-pressure-reactor-vessels

Safe Use of Pressure Vessels in Chemistry

High-pressure reactor vessels are used in synthetic chemistry to handle gases safely during reactions. They help chemists carry out gas-based processes such as hydrogenation, oxidation, and amination. These reactions often use hydrogen, oxygen, or ammonia, which are important reagents in the lab. These gases usually dissolve poorly in standard reaction mixtures. Because of that, high pressure is needed to make the reaction proceed at a useful rate. The vessel creates a sealed space that keeps...

decontamination for laboratory biosafety

Lab Cleaning Methods for Biosafety

Laboratory cleaning methods are a key part of biosafety because microbial contamination can build up and spread disease. Decontamination is used to reduce that risk on lab surfaces and equipment. The level of cleaning depends on how much contamination is present and what kind of item needs treatment. Decontamination can be grouped into disinfection and sterilization. Disinfection removes pathogenic microorganisms, but it does not remove bacterial spores on lab surfaces or equipment.

proper waste disposal

Lab Waste Management and Safety

Lab waste management and safety are essential parts of any laboratory activity. Waste generated during work must be handled correctly from the moment it is created until it reaches its final offsite disposal facility. Poor waste disposal can seriously harm public health and the environment. A waste management system should be planned before any lab work begins. This system guides how waste is collected, stored, and prepared for removal. For hazardous waste, special rules apply because its...

lab safety

このコレクションは、危険な物質や機器を扱う際に従うべき安全ガイドラインを提供します。これは、PPE(個人用防護具)、電気安全、一般的な緊急ガイドラインなどの普遍的なトピックス、ならびに化学および生物学の実験室に特異的な安全手順を含んでいます。

Learn how electrical hazards in the lab can cause shock, fire, or explosion, and why safe handling of powered equipment matters for high school labs.

Preventing Lab Electric Shock and Fires | JoVE K12

Chemistry

CHEM.1

CHEM.1.C

Biology

BIO.1

BIO.1.C

Physics

PHYS.1

PHYS.1.C

Chemistry and Physics

IPC.1

IPC.1.C

Robert Rioux

Suprita Jharimune

Pennsylvania State University

Overview

Before Powering Up

Avoiding Electrical Shock

In Case of an Emergency

Summary

The Scientific Method

The scientific method is a detailed, empirical problem-solving process used by biologists and other scientists. This iterative approach involves ...

Inductive Reasoning

Inductive reasoning is a form of logical thinking that uses related observations to arrive at a general conclusion. It is uncertain and operates in ...

Deductive Reasoning

Deductive reasoning, or deduction, is the type of logic used in hypothesis-based science. In deductive reasoning, the pattern of thinking moves in the ...

Correlation and Causation

Correlation and CausationStatistical tests can calculate whether there is a relationship, or correlation, between independent and dependent variables. A ...

Ask questions and define problems related to specialized topics of study based on observations or information from text, phenomena, models, or investigations;

112.51.c.1.A.

Scientific Method

The scientific method is used to solve problems and explain phenomena. The development of the scientific method coincided with changes in philosophy ...

Demonstrating the Scientific Method with Tree Branches
ExpandObtain branches containing a few dozen typical leaves from five different local tree species. ...

Observation and Background Research
ExpandNOTE: The first two steps in the scientific process involve studying and observing natural phenomena of ...

Problem-Solving

A problem-solving strategy is a plan of action used to find a solution. It involves trial and error, algorithms, heuristics, and insights. Effective ...

Problem Definition

Problem definition is the initial and the most essential step in research.
The researcher identifies and explains the specific issue or gap to be ...

Apply science practices related to specialized topics of study to plan and conduct investigations or use engineering practices to design solutions to problems;

112.51.c.1.B.

Proper Personal Protective Equipment

Robert M. Rioux &#38; William A Elliott, Pennsylvania State University, University Park, PA
Hazards are many and varied in the laboratory, but the right ...

Emergency Eyewash and Shower Stations

Robert M. Rioux, Pennsylvania State University, University Park, PA
The Occupational Safety and Health Administration (OSHA) mandates that an emergency ...

Working with Centrifuges

Source: Robert M. Rioux &amp; Suprita Jharimune, Pennsylvania State University, University Park, PA
Earth's gravitational force is capable of separating ...

Working with Hot and Cold Sources

Source: Robert M. Rioux &amp; Suprita Jharimune, Pennsylvania State University, University Park, PA
Working with extreme temperatures, both high and low, ...

Guidelines in Case of a Laboratory Emergency

Robert M. Rioux &amp; Zhifeng Chen, Pennsylvania State University, University Park, PA
The most common laboratory emergencies include chemical spills, ...

Chemical Storage: Categories, Hazards And Compatibilities

Source: Robert M. Rioux &amp; Taslima A. Zaman, Pennsylvania State University, University Park, PA
While the use of various chemicals in experimental ...

Safe Handling of Mineral Acids

Source: Robert M. Rioux &#38; Taslima A. Zaman, Pennsylvania State University, University Park, PA
A mineral acid (or inorganic acid) is defined as a ...

Handling Chemical Spills

Source: Robert M. Rioux &#38; Taslima Zaman, Pennsylvania State University, University Park, PA
Since chemicals are commonly used for laboratory research ...

Proper Use of Autoclaves

Robert M. Rioux &amp; Zhifeng Chen, Pennsylvania State University, University Park, PA
Autoclaving is one of the most commonly used methods in the ...

Fume Hoods and Laminar Flow Cabinets

Robert M. Rioux &amp; William A. Elliott, Pennsylvania State University, University Park, PA
Fume hoods and laminar flow cabinets are engineering controls ...

Decontamination for Laboratory Biosafety

Robert M. Rioux and Zhifeng Chen, Pennsylvania State University, University Park, PA
Decontamination is essential for laboratory biosafety, as the ...

Proper Waste Disposal

Robert M. Rioux and Taslima A. Zaman, Pennsylvania State University, Pennsylvania, PA

Users are responsible for the proper disposal of the waste ...

Use appropriate safety equipment and practices during laboratory, classroom, and field investigations as outlined in Texas Education Agency-approved safety standards;

Common Lab Glassware and Uses

Source: Laboratory of Dr. Neal Abrams &#8212; SUNY College of Environmental Science and Forestry
Glassware is a regular appearance in the professional ...

Lab Techniques

Measurement Accuracy
The ability to repeat an experiment and get the same results, or reproducibility, is essential in scientific research. However, ...

Source: Smaa Koraym at Johns Hopkins University, MD, USA

	Preparation of LaboratoryExpand
	Here we show the laboratory preparation for 10 students ...

Source: Smaa Koraym at Johns Hopkins University, MD, USA

	Determining the Density of an EggExpand
	Density is a measure of how compact a substance or ...

Proper Lab Notebook Keeping

Organic Lab Notebook Keeping
Record keeping is a vital skill in science and organic chemistry labs. Without proper notes, descriptions, quantities, or ...

Source: Lara Al Hariri at the University of Massachusetts Amherst, MA, USA

	Preparation of the LaboratoryExpand
	Here, we show the laboratory preparation ...

Source: Lara Al Hariri and Ahmed Basabrain at the University of Massachusetts Amherst, MA, USA

	Nitration of Methyl BenzoateExpand
	From this lab onward, ...

Use tools appropriate to the specialized topic of study;

112.51.c.1.D.

SI Units: 2019 Redefinition

Measurement is integral to analytical chemistry. Each record comprises a number &#8211; denoting the magnitude&#160; &#8211; and the unit &#8211; a ...

International System of Units

The International System of Units, known as the SI system, is a universally accepted measurement system recognized and used worldwide. The SI system is ...

Measurement: Standard Units

Every measurement provides three kinds of information: the size or magnitude of the measurement (a number), a standard of comparison for the measurement ...

Measurement: Derived Units

The International System of Units or SI system, by international agreement, has fixed measurement units for seven fundamental properties: length, mass, ...

Collect quantitative data using the International System of Units (SI) or qualitative data as evidence as appropriate to the specialized topic of study;

112.51.c.1.E.

Review and Preview

Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative ...

What is a Frequency Distribution

A frequency is the number of times a value of the data occurs. The sum of all the frequency values represents the total number of students included in the ...

Cumulative Frequency Distribution

A cumulative frequency distribution is another type of frequency distribution. Instead of reporting how many data values fall in some classes, it reports ...

Ogive Graph

An ogive graph is sometimes called a cumulative frequency polygon. It is one type of frequency polygon that shows cumulative frequency. In other words, ...

Histogram

The histogram is a graphical representation in the x-y form of data distribution in a data set. The horizontal x-axis is labeled with what the data ...

Relative Frequency Histogram

The relative frequency depicts the proportion of data points that have each value. The frequency tells the number of data points that have each value. ...

Scatter Plot

The most common and easiest way to display the relationship between two variables, x and y, is a scatter plot. A scatter plot shows the direction of a ...

Time-Series Graph

A time-series graph is a line graph with repeated measurements taken at successive intervals of time. It is also called a time series chart. To construct ...

Bar Graph

A bar graph is also called a bar chart and consists of bars that are separated from each other. It either uses horizontal or vertical bars to show ...

Multiple Bar Graph

As the name suggests, a multiple bar graph is the same as a bar graph but has multiple bars to depict relationships between different data values. One can ...

Pareto Chart

A Pareto chart is a bar graph or a combination of both line and bar graphs. The bar lengths represent the individual values or the frequency, while the ...

Pie Chart

A pie chart (or a pie graph) is a circular graphical chart or a pictorial representation of categorical data. It is divided into slices of pie each ...

Organize quantitative or qualitative data using representations appropriate to the specialized topic of study such as scatter plots, line graphs, bar graphs, charts, data tables, diagrams, scientific drawings, and student-prepared models;

112.51.c.1.F.

Modeling and Similitude

A scaled model of a dam is tested in a controlled environment to observe how it will manage water flow, turbulence, and pressure.
This setup predicts the ...

Typical Model Studies

Typical model studies analyze scaled-down systems to predict fluid behavior, focusing on interactions with free surfaces and flow around immersed bodies.
...

design-example-creating-a-hydraulic-model-of-a-dam-spillway

Design Example: Creating a Hydraulic Model of a Dam Spillway

A hydraulic model of a dam spillway is often created by scaling down the design, typically to a 1:15 ratio, to replicate key flow characteristics such as ...

Develop and use models to represent phenomena, systems, processes, or solutions to problems as appropriate to the specialized topic of study; and

112.51.c.1.G.

Scientific and engineering practices. The student, for at least 40% of instructional time, asks questions, identifies problems, and plans and safely conducts classroom, laboratory, and field investigations to explain phenomena or design solutions using appropriate tools and models. The student is expected to:

Preventing Lab Electric Shock and Fires

Description

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