Energy and Molecular Structure Review

If students were trying to make fake snow by spraying water into the air, what temperature would it need to be outside for this to work?

• Above 100 degrees C

• Between 100 and 50 degrees C

• Between 0 and 50 degrees C

• Below 0 degrees C

Tags

NGSS.MS-PS1-4

WHat happens when a substance goes from a liquid state to a solid state? (Think about liquid water forming ice)

• Thermal energy is added

• Pressure is added

• Thermal energy is removed

• Temperature increases

Tags

NGSS.MS-PS1-4

If the number of lines shows how much thermal energy a molecules has, which statement describes the substances in the boxes?

• The box on the left is a solid, and the box on the right is a gas.

• Both boxes are gasses

• The box on the left is a liquid or a gas, and the box on the right is a liquid or solid.

• Both boxes are solids

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If more lines attached to the molecule mean the molecule is moving more, which box has molecules with more kinetic energy?

• The box to the right

• The box to the left

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

If graphite and diamonds are both made of only carbon atoms, why are they different substances?

• Their temperatures

• The arrangement of the atoms

• One is solid and the other liquid

Tags

NGSS.MS-PS1-1

Density is how tightly packed the molecules are in a substance. Based on this diagram, which statement is true?

• Warm air is more dense than cold water

• Warm air is less dense than cold water

• Warm air and cold water have the same density

Tags

NGSS.MS-PS1-4

In our water and food coloring lab, why did the food coloring move more quickly throughout the hot water than it did in the cold water?

• The hot water has more kinetic energy

• Hot water has more molecules to move the food coloring

• Cold water has more thermal energy than the hot

• The cold water has more kinetic energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The smallest particle of an element; made of electrons, protons, and neutrons

• Atom

• Molecule

• Temperature

• Kinetic energy

Tags

NGSS.MS-PS1-1

The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically

• Atom

• Molecule

• Proton

• Nucleus

Tags

NGSS.MS-PS1-1

The structure of a solid material whose atoms or molecules are arranged in an ordered pattern

• Liquid

• Gas

• Crystalline

Tags

NGSS.MS-PS1-1