1 .		Which of the following laws states that a compound always contains elements in exactly the same proportions? [Hint]
2 .		Which of the following ideas is attributed to the ancient Greeks? [Hint]
3 .		According to Dalton's theory, _____ are composed of only one kind of atom, and _____ are made up of two or more kinds of atoms. [Hint]
4 .		Which of the following is not true concerning Mendeleev's periodic table? [Hint]
5 .		What principle is illustrated by the following set of compounds? CH4, C2H2, C2H6, C3H8 [Hint]
6 .		Iron combines with oxygen in a ratio of 3.49 parts iron (by mass) to 1.00 part oxygen, to form iron(II) oxide. How much iron is needed to combine with 50.0 g of oxygen to form iron(II) oxide? [Hint]
7 .		Which of the following was not part of Dalton's atomic theory? [Hint]
8 .		A scientist burns 3.0 g of hydrogen with 5.0 g of oxygen to form water. A flame test proved that only hydrogen remained. According to the law of conservation of mass, how much unreacted hydrogen gas should be left over if 5.6 g of water are generated? [Hint]
9 .		The relative scale of atomic weights is based on which element? [Hint]
10 .		Carbon is burned in the presence of oxygen to form carbon dioxide. What can be said about what happened to the carbon? [Hint]
11 .		Nitrogen combines with oxygen to form nitrogen dioxide in a ratio of 7.0 parts nitrogen to 16.0 parts oxygen. How many grams of nitrogen are needed to generate 50.0 g of nitrogen dioxide? [Hint]
12 .		Of the four basic elements proposed by the ancient Greeks, which is the only one now known not to be composed of atoms? [Hint]
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