Science Quiz

What is the main difference between a physical change and a chemical change?

• Physical changes create new substances while chemical changes don't

• Chemical changes are always reversible while physical changes aren't

• Physical changes can be reversed while chemical changes create new substances

• There is no difference between physical and chemical changes

In a salt water solution, which is the solvent?

• The salt

• The water

• Both salt and water

• Neither salt nor water

Which of these is an example of a chemical change?

• Ice melting into water

• Paper being cut into pieces

• Bread baking in an oven

• Water evaporating from a puddle

What is a mixture?

• Two or more substances combined where you can still see each part

• Two liquids that cannot be separated

• A new substance formed from a chemical reaction

• A single pure substance

When sugar dissolves in water, what is the sugar called?

• A solvent

• A solution

• A mixture

• A solute

Which is an example of a physical change?

• Milk turning sour

• Wood burning

• Crushing an aluminum can

• Rust forming on a bike

What happens in a solution?

• Two substances form a new chemical

• One substance dissolves completely in another

• Two substances remain separate

• A gas is always produced

Which observation suggests a chemical change has occurred?

• Ice cream melting

• Production of bubbles or gas

• Breaking a glass

• Folding paper

In chocolate milk, what is the solute?

• The milk

• The chocolate syrup

• Both milk and chocolate

• Neither ingredient

What is NOT a sign of a chemical change?

• Color change

• Gas formation

• Change in shape

• Temperature change