Chemistry, 28.07.2019 15:30 2605098

Jean has a sample of a liquid. if she changes the liquid’s phase by evaporating, freezing, condensing, or melting it, the molecules will spread out, allowing the sample to expand and fill a container of any shape or volume.

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Only substance in gas state can spread out, expand or compressed, and fill a container with any shape and volume.

Since it's already given a liquid, so the only correct answer is the phase change from liquid to gas. And the correct term should be EVAPORATING. it is where liquid gain heat and changes into vapor or gas.

Evaporating is a kind of physical change and to heat different types of liquid into gas requires different amount of heat since they may have different heat capacities.

Meanwhile other terms are different state changes, such as freezing, which is from liquid into solid ; condensing, from gas to liquid ; melting, from solid to liquid. None of them changes into gas and therefore they doesn't match the question.

The answer is evaporating.

Answer from: josephjannace12

Jean has a sample of a liquid. If she changes the liquid's phase by Evaporating it, the molecules will spread out, allowing the sample to expand and fill a container of any shape or volume.

Explanation:

Evaporation is a kind of condensation that happens on the surface of a liquid as it turns into the gas state before approaching its boiling point. The enclosing gas must not be immersed with the evaporating matter. Evaporation is a major element of the water cycle and is continually happening throughout the environment.

Answer from: Quest

$\frac{239}{94}pu+\frac{1}{0}n ====> \frac{y}{z}x+\frac{134}{54}xe+3\frac{1}{0}$

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137 subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54 subtract 54 from both sides.

40 = z

answer

$\frac{103}{40}x=\frac{103}{40}zr$

Answer from: Quest

you need to have a picture of the atom that way we can answer it

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Jean has a sample of a liquid. if she changes the liquid’s phase by evaporating, freezing, condensin...

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