Reactants and Products

Question 1

What are the reactants in the process described below?

During photosynthesis, plants use light energy, carbon dioxide, and water to make glucose and oxygen.

Answer 1

light energy, carbon dioxide, water

Question 2

In the reaction, sodium+water→sodium hydroxide+hydrogenThe products are ____ and sodium _____

Answer 2

hydrogen; hydroxide

Question 3

Which of the following statements about REACTANTS are TRUE?

Answer 3

b
they combine, break apart, or rearrange in order to make products in a reaction

c
they are always written on the left side of the arrow in a chemical equation

d
they are the substance(s) required for a reaction to occur

Question 4

____ are the starting materials and are written on the left-hand side of the equation.

Answer 4

Reactants

Question 5

A ___ is a substance that is present at the start of a chemical reaction that is converted into product(s).

Answer 5

reactant

Question 6

Which statement(s) is/are TRUE about reactants in chemical reactions?

Answer 6

Reactions can sometimes go in both directions, reversing between reactants and products.

Reactants are always written on the left side of the arrow in a chemical equation.

Reactants are present at the beginning of a reaction and rearrange to form new products.

Question 7

What are the products in the process described below?

During cellular respiration, organisms use glucose and oxygen to generate carbon dioxide, water, and energy.

Answer 7

Carbon dioxide, water and energy

Question 8

Which statement about the following reaction is TRUE?

CH4 + 2O2 → 2H2O + CO2

Answer 8

CH4 and O2 are the reactants because they are found on the left side of the arrow.

Question 9

Which of the following NEVER occurs during a chemical reaction?

Answer 9

atoms are destroyed

Question 10

A chemical equation describes a chemical reaction.

Answer 10

yes