Wavailable hint(s) check all that apply. when a solid is converted to a liquid, heat is absorbed. when heat is applied to a solid, the molecular motion decreases as the temperature increases. the average kinetic energy of the system changes while all of a solid is converted to a liquid. the temperature increases while all of a liquid is converted to a gas. temperature remains constant while all of a solid is converted to a liquid.

Here's what I get  

Explanation:

When a solid is converted to a liquid, heat is absorbed. TRUE.

Temperature remains constant while all of a solid is converted to a liquid. TRUE.

When heat is applied to a solid, the molecular motion decreases as the temperature increases. False. Molecular motion increases as the temperature increases.

The average kinetic energy of the system changes while all of a solid is converted to a liquid. False. The temperature remains constant during a phase change, so the average kinetic energy of the system does not change.

The temperature increases while all of a liquid is converted to a gas. False.

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explanation:

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.