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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

plleeaasseee heelllpp

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

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

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  1. Read your question directly above. This is so difficult to read and interpret. I won't help again unless you number the questions AND label the answers clearly. It's difficult to even know where answer a or b or c can be found.
    1. pH = 7 neutral
    pH < 7 = acid and pH > 7 = basic
    2. c
    3. I don't like any of the answers shown. Perhaps answer c, which is missing, may be a better fit but it isn't there.
    4. c

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    DrBob222

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