Unit 7 Lesson 4: Chemical Reactions

Which of the following forms of energy is released or absorbed in most chemical reactions?

A factor that affects the Rate of Reaction is

A chemical reaction that releases energy. The temperature will increase.

A chemical reaction that absorbs energy. The temperature will decrease.

C₆ H₄ O₂ How Many Carbon atoms are there?

C + O₂ → CO₂ Which are the Products?

True or False: A piece of iron rusting is a physical change.

A balanced chemical equation shows that chemical reactions follow the law of conservation of ____

A balanced chemical equation reflects the idea that the mass of the products

Substances that the chemical reaction starts with.

The law that states that energy cannot be created or destroyed but can be changed from one form to another.

Law that states that mass cannot be created or destroyed in ordinary chemical and physical changes.

A representation of a chemical reaction that uses symbols to show the relationship between reactants and the products.

Substances that forms as a result of a chemical reaction.

A combination of chemical symbols and numbers to represent a substance

The total amount of energy before and after a chemical reaction is

The process by which atoms are rearranged and chemical bonds are broken and formed to produce a new substance.

Bubbles forming are a sign of a chemical reaction.