Science Test: Unit 2

If something has mass and occupies space, it can best

be defined as ________.

• Atom

• Solid

• Matter

• Element

Why did the two pieces of

gold have the same melting points?

• Gold is made of the same types of atoms.

• The melting point of all natural minerals is the same.

• Gold is a metal and does not conduct heat

• The melting point of all metals is the same.

What happens to steam during condensation?

• It gains energy and changes to a gas.

• It gains energy and changes to a liquid

• It loses energy and changes to a gas.

• It loses energy and changes to a liquid.

Tags

NGSS.MS-PS1-4

What causes a change in the state of matter, such as

melting or freezing?

• A change in thermal energy.

• A change in the number of particles.

• A change in the mass of the substance.

• A change in the chemical composition of the

  substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to the density of most substances as

thermal energy is added?

• The density increases because particles move closer

  together.

• The density decreases because particles move away

  from each other.

• The density remains the same regardless of thermal

  energy changes.

• The density decreases because particles move closer

  together.

Tags

NGSS.MS-PS1-4

Which of the following is a physical property that can be

measured without changing the identity of a substance?

• Reactivity

• Boiling point

• Flammability

• Melting point

Which property is dependent on the amount of matter

present in a substance?

• Density

• Boiling point

• Volume

• Melting Pont

What is the most common solvent?

• Air

• Nitrogen

• Water

• Blood

Tags

NGSS.MS-ESS2-4

Which factor does NOT affect the rate at which solutes

dissolve in a solvent?

• Temperature

• Stirring

• Time

• Mass of the solute

As butter melts, its molecules___________.

• absorb heat energy and move farther apart

• absorb heat energy and move closer together

• release heat energy and move farther apart

• release heat energy and move closer together

Tags

NGSS.MS-PS1-4