Physical Science Matter Pre-Test

A factor that does NOT change in an experiment is a ______.

• constant

• control

• variable

• hypothesis

A gardener applies different kinds of plant food to her strawberry plants to see which one will make the plants grow the tallest. What is the independent variable?

• type of plant food

• different strawberry plants

• growth of plants

• height of plants

42 L = ___mL

• 4,200
• .0042
• 4.20
• 42,000

If a student thinks an apple a day keeps the doctor away what are some constants they need to consider?

• the number of apples eaten by test subject, who eats them, amount of sleep testing subjects recieve
• the apples
• the number of doctors visits
• the age of the test subjects, the general sleep and meals eaten by test subjects

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

What term describes a solid changing to a gas?

• Deposition
• Sublimation
• Evaporation
• Freezing

According to Boyle's Law, if the pressure of a gas is increased, the ____________ will decrease.

• temperature

• density

• mass

• volume

In an atomic model that includes a nucleus, positive charge is

• concentrated in the center of the atom.

• spread evenly throughout the atom.

• concentrated at multiple sites in an atom.

• located in the space outside the nucleus.

Which subatomic particles are located in the nucleus of an atom?

• protons only

• protons and electrons

• neutrons and electrons

• protons and neutrons

The ______ is the central core of an atom.

• isotope

• electron

• nucleus

• electron cloud