Coach Book Lessons 3-5 (Pages 24-38

Which type of arrangement and movement would particles of liquid mercury display?

• Particles are closely packed together, and they vibrate back and forth.

• Particles are spread far apart, and they move very quickly

• Particles are close together, but they are able to slip past one another.

• Particles are spread far apart, and electrons are detached from the atoms.

Tags

NGSS.MS-PS1-4

In which state of matter do particles spread and fill the volume of the container that holds them?

• gas

• liquid

• solid

• ice

How is plasma different from gas?

• Plasma has a definite shape, but gas does not.

• Gas is hotter than plasma.

• Electrons separate from atoms in plasma.

• Gas has a definite volume, but plasma does not.

A scientist performs an investigation in which thermal energy is removed from a sample of a substance. When the substance begins to change from a gas to a liquid, the scientist measures the temperature of the substance. This temperature is the substance's ___.

• melting point

• freezing point

• evaporation point

• condensation point

Tags

NGSS.MS-PS1-4

Which of the following is an example of a chemical change?

• water evaporating

• carbon joining with oxygen to form carbon dioxide

• ice cream melting

• salt dissolving in water to form a solution

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What happens during a physical change?

• New substances are formed.

• The identity of the substance is changed.

• A chemical reaction occurs.

• The form of a substance changes, but not its identity.

When enough heat is added to liquid water, it boils, and bubbles of water vapor rise to the surface and then into the air. Which type of change is this and why?

• A chemical change, because a gas is produced

• A chemical change, because heat is produced

• A physical change, because the identity of the substance changes

• A physical change, because the substance changes state.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A sample of aluminum has a volume of 3.0 cm³ and a mass of 8.1 g. Which is the density of aluminum?

• 2.7 g/cm³

• 5.1 g

• 11.1 cm³

• 24.3 g/cm³

How many atoms of nitrogen are found in the reactants of this reaction?

• 1

• 2

• 3

• 6

Tags

NGSS.MS-PS1-1

What are the reactant(s) of this chemical formula?

• nitrogen only

• hydrogen only

• nitrogen and hydrogen

• ammonia

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5