__________ is the basic unit of matter. When two or more atoms bond together or combine they make a _______________. When carbon and oxygen atoms combine to form the gas called carbon dioxide they create a new ___________. An atom is the basic unit of matter. When two or more atoms bond together or combine they make a molecule. When carbon and oxygen atoms combine to form the gas carbon dioxide they create a new molecule. Suppose that you could cut a sulfur Suppose that you could cut a sulfur cube into smaller and smaller parts. cube into smaller and smaller parts. If you could separate out one If you could separate out one molecule, what would it be? molecule, what would it be? A molecule of sulfur Atoms and molecules are always in Atoms and molecules are always in _______________. motion. Molecules in air can be seen as _________ in the light. Molecules in air can be seen as bouncing dust particles in the light. The motion of water molecules The motion of water molecules will eventually cause food coloring will eventually cause food coloring to ________________ in water. to spread out in water. Atoms and molecules in a solid material move by _________________. Atoms and molecules in a solid material move by shaking back and forth or twisting.