Chemistry Pretest/Post-test

An educated guess is a __________________.

• discussion

• conclusion

• hypothesis

• data

The factor that you change in an experiment is ______________.

• control

• independent variable

• dependent variable

• constant

The factors you keep the same in an experiment are the ____________________.

• independent variable

• control

• constant

• dependent variable

Matter is all around us.

• True

• False

Which of the following is NOT a physical property of matter?

• solubility

• boiling point

• conductivity

• burning

Boiling point is the temperature when ________________.

• A substance changes from liquid to gas.

• A substance changes from gas to liquid.

• A substance changes from a solid to a liquid.

• A substance changes from a solid to a gas.

Two examples of chemical properties.

• density and hardness

• reactivity and flammability

• conductivity and boiling point

• viscosity and solubility

While roasting a marshmallow, it catches on fire and changes dramatically. This demonstrates

• melting point

• reactivity

• viscosity

• flammability

Sugar is dissolved in water. This demonstrates the property of _____________________.

• viscosity

• solubility

• flammability

• malleability

Who is considered to be the first real chemist and lived in the 1600s?

• John Dalton

• Robert Boyle

• Dmitri Mendeleev

• Michael Faraday