10.1 lesson: chemical reactions

Multiple Choice

Which of these is a chemical reaction?

• Oxygen and hydrogen combining to form water

• Water freezing into ice

• Ice melting into water

• water boiling into steam

Multiple Choice

You want to slow down the chemical reactions in your food to make it last longer. Where should you put it?

• On the countertop

• In the oven

• In the freezer

Multiple Choice

Oxidation is_____

• The loss of electrons

• The gain of electrons