5
In the early 1800s John Dalton used symbols to represent atoms. Each
element had a differe...
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5
In the early 1800s John Dalton used symbols to represent atoms. Each
element had a different symbol. The symbols for oxygen, hydrogen and
carbon are shown below.
carbon
oxygen hydrogen
Use these symbols to draw molecules of oxygen (O2), water (H2O), and
carbon dioxide (CO2).
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