7 - Lesson 12 Chemical Reaction Vocab

Front

What is a substance that exists before a chemical reaction takes place?

Back

Reactant

Front

What term describes data that can be used to support a scientific claim or argument?

Back

Scientific evidence

Front

What is the term for a new substance that forms during a chemical reaction?

Back

Product

Front

What type of chemical reaction releases more energy to the surroundings than it absorbs?

Back

Exothermic reaction

Front

What is the shorthand notation made up of arrows and chemical formulas for reactants and products in a chemical reaction?

Back

Chemical equation

Front

What is the term for a chemical reaction that absorbs energy from its surroundings?

Back

Endothermic reaction

Front

What is the law that states that mass is neither created nor destroyed in a chemical reaction?

Back

Law of conservation of mass

Front

What is the process called when a substance changes from one state of matter to another?

Back

Phase change

Front

What is the term for the minimum amount of energy required to start a chemical reaction?

Back

Activation energy

Front

What is a catalyst and how does it affect a chemical reaction?

Back

A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.