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Chapter 3, Lesson 4 Multimedia

Wax

A small tealight candle and a close-up of the long hydrocarbon chains of which it is composed.
  • Wax is made of carbon and hydrogen atoms bonded together in long chains.
  • The chains are tangled, intertwined and packed together to make the wax.

Water

A glass of water, with a close-up on the water molecules of which it is composed.
  • Water molecules are packed more closely together than the long molecules that make up wax.
  • The oxygen atoms in water are also smaller and heavier than the carbon atoms in wax. This contributes to making water more dense than wax.

Clay

A small ball of clay, with a close-up on the molecules of which it is composed.
  • Clay contains oxygen atoms like water but also contains heavier atoms such as silicon and aluminum.
  • These atoms are packed pretty close together which makes clay more dense than water.