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Answer the questions, then check your answers on the next screen.

Think for Yourself...

Magnesium is an elementary substance. It has a high melting point. What kind of structure would you expect it to have?
What structure does oxygen have?
Magnesium oxide was still solid at a very high
temperature: what structure is it likely to have?

Notes: see Teachers’ Guide
teachers’ guide m6

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m1: changing
m2: mixing reaction
m3: calcium water
m4: heating reaction
m5: in solution
m6: decomposition
m7: dehydration

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