CLMS Physical Science - Unit 1: Part 1 Review

The particles in which substance have the LOWEST amount of kinetic energy?

• the wax of a candle at room temperature

• the water in a glass of ice water

• the steam from a cup of coffee

• the ice cube in a glass of tea

Tags

NGSS.MS-PS1-4

Why is the electron cloud model more accurate than the Bohr model of the atom?

• it accounts for regions of space where electrons are most likely located

• it defines specific locations for electrons

• it is simpler and easier to understand

• it was proposed by a more famous scientist

Which statement BEST describes the molecules in a sample of water that was heated from a liquid to a gas?

• the average size of the molecules decreased

• the average size of the molecules increased

• the average kinetic energy of the molecules decreased

• the average kinetic energy of the molecules increased

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Based on the drawing, the change in state was MOST likely...

• liquid to gas

• liquid to solid

• solid to gas

• solid to liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A model shows that an atom has 18 subatomic particles in the nucleus. Ten of those particles do not have a charge. Which statement is true about the model?

• the atomic number is 18

• it has 8 protons

• it has 10 electrons

• it has an atomic mass of 28 amu

Tags

NGSS.MS-PS1-1

If two isotopes of an element have the same number of protons but different numbers of neutrons, how will their chemical properties compare?

• they will have completely different chemical properties

• they will have slightly different chemical properties

• they will have identical chemical properties

• it depends on the specific element

Which BEST describes the motion of molecules in the gaseous state?

• they vibrate quickly in place

• they spread apart to fill their container

• they move at the same speed as in a liquid

• they move slowly over one another

Tags

NGSS.MS-PS1-4

Why do isotopes of an element have different atomic masses?

• They are completely different elements

• They have a different number of protons

• They have a different number of electrons

• They have a different number of neutrons

A researcher has an idea about the properties of an undiscovered subatomic particle. Which statement must be true in order for this idea to be considered a scientifically correct hypothesis?

• the idea can be tested

• the idea came from a theory

• the idea is similar to other ideas

• the idea is published in an online journal

Which statement BEST describes the change occurring from Time 1 to Time 2?

• A gas becoming a solid

• A gas becoming a liquid

• A solid becoming a liquid

• A liquid becoming a solid

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4