Substances are classified as acidic, basic, or neutral. The pH scale can be used to classify a substance. Which feature suggests that a substance is basic? a

The pH is 0.
b

The pH is 7.
c

The pH is less than 7.
d

The pH is greater than 7.

As a sample of water turns to ice,
a

new molecules are formed.
b

the mass of the sample is increased.
c

the arrangement of the molecules changes.
d

energy is absorbed by the molecules.

If you only wanted to increase the particle motion of a gas without increasing any of it's other properties, which would the most correct situation?
a

Keep the gas at a constant pressure and keep the temperature constant, but increase the volume of the gas
b

Keep the gas in a fixed container at constant pressure and increase the temperature
c

Keep the gas in a fixed container at constant pressure and decrease the temperature
d

Keep the gas at a constant volume and keep the temperature constant, but decrease the pressure of the gas

What is supersaturation?
a

Supersaturation occurs when a different solvent is added to a solvent, increasing how much can be dissolved
b

Supersaturation occurs when natural water dilutes a solvent that also dissolves the solute at the same time
c

Supersaturation occurs when a solvent's temperature is increased to increase the dissolving amount, then cooled to a normal temperature
d

Supersaturation requires the use of powered solute, to increase the saturation point beyond the normal maximum