A drop of food coloring placed into a glass of water spreads out evenly, coloring all the water. What does this evidence suggest?

A bottle of perfume is opened and the smell travels across the room. What does this observation suggest? Particles of perfume

When the temperature of a substance increases, what happens to the speed of the molecules? They

What happens to the volume of most substances when the temperature increases? It

What happens to molecules in a liquid when it changes to a gas? The molecules have:

What would happen to a balloon if you put in in a freezer?

Sidewalks have “cracks” which are imprinted every meter or two. What is the purpose of these cracks?

Why might a metal door be difficult to open during hot weather? The door

An increase in temperature of a liquid causes it to change to which phase?

What color is the white house?

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