Chemical Interactions

Chemical bonds are the forces that hold atoms together in molecules and compounds. Atoms bond with one another to achieve a stable electron arrangemen

A chemical compound is a substance made up of two or more different elements that are chemically bonded together. When elements combine to form compou

A subscript (the small number after a chemical symbol) shows how many atoms of that element are in a compound molecule.Example: CO₂ represents one car

Cations are positively charged ions formed when an atom loses one or more electrons (usually metals).Example: Sodium (Na) loses one electron to form N

Science and Engineering Practices (SEP): Developing and Using ModelsScientists create models to demonstrate how ionic compounds form when atoms transf

Science and Engineering Practices (SEP): Developing and Using ModelsScientists use models of covalent bonds to demonstrate how atoms share electrons a

Common Examples of Molecular Compounds:Water (H₂O): Essential for life; it forms hydrogen bonds that give it unique properties.Carbon dioxide (CO₂): A

Science and Engineering Practices (SEP): Analyzing and Interpreting DataScientists create molecular models to visualize how electrons are distributed

Science and Engineering Practices (SEP): Developing and Using ModelsScientists use molecular models to illustrate how hydrogen bonds form between mole

Common Examples of Metals with Metallic Bonding:Iron (Fe) is extensively used in construction and manufacturing.Aluminum (Al) is a lightweight metal c

Science and Engineering Practices (SEP): Analyzing and Interpreting DataScientists use chemical equations and molecular models to represent how atoms

Science and Engineering Practices (SEP): Analyzing and Interpreting DataScientists use chemical equations and molecular models to visually represent h

Science and Engineering Practices (SEP): Analyzing and Interpreting DataScientists use visual and experimental models to predict and explain observabl

Basic Structure of a Chemical Equation:

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. This means that the total mass of reactants

A synthesis reaction is a type of chemical reaction in which two or more simple substances combine to form a more complex product. The general form of

A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more simpler substances. The general form o

A replacement reaction is a type of chemical reaction in which one element replaces another in a compound or two elements in different compounds excha

An exothermic reaction is a chemical reaction that releases energy, usually in the form of heat. Unlike endothermic reactions, which absorb heat, exot

A combustion reaction is a type of chemical reaction in which a substance reacts rapidly with oxygen, releasing energy in the form of heat and light.

An endothermic reaction is a chemical reaction that absorbs energy, usually in the form of heat. Unlike exothermic reactions, which release heat, endo

Energy is always conserved in a chemical reaction. It cannot be created or destroyed, only transferred or transformed. This is known as the law of con

Activation energy is the minimum amount of energy required to initiate a chemical reaction. It represents the energy needed to break bonds in the reac

The rate of a chemical reaction refers to how quickly or slowly a reaction occurs. It measures the change in the concentration of reactants or product

A catalyst is a substance that increases the rate of a chemical reaction without being consumed or permanently changed during the process. Catalysts w

An alloy is a material made by mixing two or more metals—or a metal with another element—to create a new substance with improved properties. Alloys ar