The text compares molecules to tiny Lego bricks. What does this comparison help explain?

That all molecules are the same shape and are made of colorful plastic.

That different types of matter are built from different molecules.

That molecules can only be used to build things that are square or rectangular.

That matter is something you can only play with and is not found in nature.

Which of the following statements is true about the air inside a balloon and the solid ice in a freezer?

Only the ice is made of molecules.

Both are made of tiny particles.

Only the air is made of molecules.

The air is empty, and the ice is one solid piece.

It is one smooth, unbroken piece of liquid.

It is composed of billions of tiny water molecules.

It is completely empty on the inside.

It is made of a mixture of tiny air and dust particles.

That matter is made of tiny particles.

That only animals and plants are made of molecules.