Unit 3 Physical Science review

As thermal energy increases, the particle movement _______________.

In one to two sentences, explain a similarity and a difference between the particles in liquid water at 0⁰C and the particles in ice at 0⁰C.

what is the opposite of Boiling?

• condensing

• Freezing

• Melting

• Evaporating

Why do Liquids and gases take the shape of their container when solids do not? Use what you know about thermal energy and particle movement to explain.

the liquid used to dissolve a solute is called the __________.

If I make hot tea and dissolve sugar into it, I can dissolve more sugar into the mixture than if it was cool. This is called a ___________________________________.

• Supersaturated solution

• Undersaturated solution

• Saturated solution

• Crystals

Why does increasing the temperature of a gas in an enclosed space increase the speed of the particles?

The relationship among which variable quantities is expressed in the ideal gas law (check all that apply):

• Volume

• Temperature

• Number of moles

• gas constant

• pressure

If a gas is held at a constant temperature but its volume is doubled, what happens to the Pressure?

• It decreases to half of the original value

• It doubles its original value

• It stays the same

The unit we use to measure the number of particles of solute in a solution is the _________________.