Question

the sun melts a chocolate bar. what about the chocolate bar stays the same? select all that apply.
a. the phase of matter
b. the shape
c. the weight
d. the color
sound travels in
__________
a. compression waves
b. straight lines
c. zig zag lines
d. circles
what happens to the weight of a block of ice when it melts from a solid to a liquid?
a. the weight increases.
b. the weight decreases.
c. the weight does not change.
d. the chocolate bar does not have weight.
what is the name of a sound wave?
a. vibrating wave
b. compression wave
c. particle wave
d. lengthy wave

Explanation:

First question:

When the sun melts a chocolate bar, the phase of matter changes (from solid to liquid), and the shape also changes. But the weight (mass) and color remain the same.

Second question:

Sound travels in compression waves.

Third question:

When ice melts from a solid to a liquid, the weight (mass) does not change (assuming no evaporation or other mass - loss processes).

Fourth question:

A sound wave is called a compression wave.

Answer:

First question: C. the weight, D. the color
Second question: a. compression waves
Third question: C. The weight does not change
Fourth question: b. compression wave