Unit 2 Hindenburg Test Review - updated

Front

What are the substances at the beginning of a chemical equation called?

Back

Reactants

Front

How many elements are in the chemical formula C6H12O6?

Back

3

Front

What happens when bonds are broken or made in a chemical reaction?

Back

Energy is released or absorbed.

Front

What is the correct chemical formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H3SO4

Front

What type of reaction releases energy?

Back

Exothermic reaction.

Front

What are products in a chemical reaction?

Back

Substances formed as a result of a chemical reaction.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What is a catalyst?

Back

A substance that speeds up a chemical reaction without being consumed.