Chemical reactions incl. equations

What is a chemical reaction?

• a change in matter when the molecules rearrange to make new molecules

• a change in matter when matter changes its form or appearance

• a change in matter when the physical appearance changes

• a very boring change in matter

What is a chemical reaction?

• a change in matter when the molecules rearrange to make new molecules

• a change in matter when matter changes its form or appearance

• a change in matter when the physical appearance changes

• a very boring change in matter

This change is a

• chemical reaction

• physical change

• musical change

• all answers are correct

The reactants in the image above are:

• CH4 and 2 O2

• 2 H2O and CO2

• All of these are reactants

• All of these are products

The products in the image above are:

• CH4 and 2 O2

• 2 H2O and CO2

• All of these are reactants

• All of these are products

You know that a chemical reaction is occurring here because you see __________________ . (Pick 3)

• purple color

• smoke

• ice formation

• fire

• a yellow precipitate

The result of the experiment between Iodine and Aluminum was the production of __________________.

• clear liquid.

• a white powder.

• yellow precipitate.

• bubbles.

When zinc reacted with hydrochloric acid, what was the result of this reaction?

• a white powder

• a blue liquid

• a brown precipitate

• a gas

How is a chemical change different from a physical change?

• there is no difference

• a physical change creates a new substance

• a chemical change creates a new substance

How many Carbons are present on the reactant side?

• 1

• 2

• 3

• 4