(Q2) Benchmark Review

Front

What is an endothermic reaction?

Back

A reaction in which more energy is absorbed by the reactants than is released by the products.

Front

What color is the chlorine atom?

Back

Purple.

Front

How do the properties of a product compare to its reactants?

Back

The product will have new properties.

Front

What is an exothermic reaction?

Back

A reaction in which more energy is released by the products than is absorbed by the reactants.

Front

What does the conservation of mass state?

Back

Matter is neither created nor destroyed in a chemical reaction.

Front

Define reactants in a chemical reaction.

Back

Substances that undergo change during a chemical reaction.

Front

Define products in a chemical reaction.

Back

Substances that are formed as a result of a chemical reaction.

Front

What is the role of energy in chemical reactions?

Back

Energy is either absorbed or released during chemical reactions.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does it mean for a reaction to be balanced?

Back

The number of atoms for each element is the same on both sides of the equation.