Unit 3: Chemical Reactions Pre-Assessment 6

Front

What does the principle of conservation of mass mean in chemical reactions?

Back

Matter is not created or destroyed.

Front

What is the coefficient in the chemical formula 3H₂O?

Back

3

Front

If there are 4 H atoms on the reactant side, how many H atoms will be on the product side?

Back

4

Front

What are the products of the chemical reaction that produces CO₂ and H₂O?

Back

CO₂ and H₂O

Front

Which compounds are the products of the reaction involving C₆H₁₂O₆ + O₂?

Back

CO₂ + H₂O

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into different substances (products).

Front

What are reactants in a chemical reaction?

Back

Substances that undergo change during a chemical reaction.

Front

What are products in a chemical reaction?

Back

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

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved.