HSPS Matter II Test Corrections

A DECREASE in the density of a sample of a gas inside a balloon could be caused by

• putting the balloon in the refrigerator.

• taking the balloon outside on a hot day.

• shaping the balloon into the shape of a dog.

• taking the balloon down to the bottom of the ocean.

What is going to happen to the volume of a gas that is put under MORE pressure while keeping the temperature constant?

• The volume will increase.

• The volume will decrease.

• The volume will fluctuate.

• The volume will remain constant.

Why do the air molecules inside a bicycle tire speed up as the temperature gets warmer?

• because the heat is transferred to the molecules and gives them more kinetic energy

• because the warmer air allows the particles to be free from gravitational forces

• because the heat liberates the potential energy inside each molecule

• because the warmer air is less dense and particles can move more

Timothy plays basketball in his driveway during the summer. By accident, he left the basketball outside during the winter. He tried to bounce it, but it would not bounce because it was partially deflated. During the winter, air molecules in the basketball move _______ than in the summer. As a result, the pressure of the basketball is _______ in the winter.

• slower, low

• faster, high

• slower, high

• faster, low

Three balloons are inflated to the same size. The three balloons are submerged in buckets filled with ice water, tap water and water heated to 65°C. What results would you expect from this experiment?

• All the balloons would shrink.

• All the balloons would expand.

• The balloon in the ice water would expand.

• The balloon in the 65°C water would expand.

Match the vocabulary word with the correct definition: Substances that are composed of two or more different elements that are chemically combined.

• Physical Property

• Compound

• Chemical Change

• Chemical Property

• Physical Change

Match the vocabulary word with the correct definition: A property of matter that can be observed or measured without changing the identity of the substance.

• Chemical Change

• Physical Change

• Chemical Property

• Characteristic Property

• Physical Property

Match the vocabulary word with the correct definition: A physical or chemical property that is unique to a particular substance.

• Characteristic Property

• Physical Change

• Physical Property

• Chemical Change

• Chemical Property

Match the vocabulary word with the correct definition: A combination of two or more substances that are physically combined.

• Physical Change

• Chemical Change

• Chemical Property

• Physical Property

• Mixture

Match the vocabulary word with the correct definition: A change that alters the form of a substance, but does not change it to another substance.

• Characteristic Property

• Physical Change

• Chemical Property

• Chemical Change

• Physical Property