How would the volume of a solid change when it is heated ?

Question

i dont get this question as its not like the solid will expand when it gets hotter, so is the answer the it will become smaller ( as it melts ) ?

Answer 1

the volume increases, because the molocules move around more and push eachother out more.

Answer 2

hello. =)

yes, your question is confusing but maybe I could help you out with this.

Here's my answer:

"The larger the the mass the larger the volume"--- remember this. This is applicable when the solid is expanding. But when the solid has reached the melting point, meaning its mass will decrease, the volume would also decrease. This is supported through the equation:

DENSITY= MASS /VOLUME

Mass and volume are directly proportional.

To avoid being confused, take also in consideration that:

a. solids do expand and sometimes increase its mass (but some solids do not)

b. solids melt upon reaching its melting point.

c. Mass and volume are directly proportional

I hope I have helped you out. =)