Introduction to Matter

Weight is the measure of the force of _______ on an object.

• gravity

• mass

• air

• molecules

Which of the following illustrates the conservation of mass?

• After a library fire all that remained of the books and magazines were ash, water vapor, and carbon dioxide fumes.

• When matter burns it disappears.

oxygen and sugar are examples of

• pure substances

• elements

• mixtures

• atoms

If you lived on the moon, what would change, your weight or your mass?

• Your weight because the force of gravity is less, which makes you weigh less.

• Your mass because the force of gravity is less, which makes your mass less.

• Your mass because it does not change depending on gravitational force.

• Your weight because it does not change depending on gravitational force.

An ______ change releases energy.

• exothermic

• endothermic

What is the chemical formula for sulfuric acid?

• S2HO4

• O2H4S

• H2SO4

• H12O4S3

New substances are produced by a _______ change.

• Chemical

• Physical

She needs to calculate which object has a mass of 27 grams. If each object has an identical volume of 3 cm³, which object has a mass of 27 grams?

• A

• B

• C

• D

The amount of space that matter occupies.

• Mass

• Volume

• Weight

• Density

_______ is related to the energy of motion of the particles of matter.

• Temperature

• Thermal Energy

• Friction

• Exothermic