1. How many atoms are in one molecule of ? How many atoms of each element are in one molecule of ? 2. What does the chemical formula of a substance tell us about that substance? 3. Are the physical...

1. How many atoms are in one molecule of
? How many atoms of each element are in one molecule of
?

2. What does the chemical formula of a substance tell us about that substance?

3. Are the physical and chemical properties of a compound necessarily similar to those of the elements from which it is composed?