Chemistry: Matter and Change

Section 4: Elements and Compounds

Self Check Quizzes

1
Which of the following is a compound?
A)water
B)neon
C)steel
D)crude oil
2
Periods are ___________ on the periodic table.
A)horizontal rows
B)vertical columns
C)left to right diagonals
D)right to left diagonals
3
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In the figure above, the volume of hydrogen gas is twice the volume of oxygen gas. What is the mass relationship between hydrogen and oxygen gas?
A)The hydrogen gas is twice as massive as the oxygen gas.
B)The hydrogen gas is half as massive as the oxygen gas.
C)More information is required.
D)There is no relationship because gasses have no mass.
4
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Consider the table above. In a sample of 100.0 grams of sucrose, what would be the expected mass of hydrogen?
A)42.20 grams
B)51.30 grams
C)6.50 grams
D)100.0 grams
5
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In table 3.5, why are the mass ratios of copper to chlorine not the same for compound I and compound II?
A)experimental error
B)the two compounds are not the same
C)there is another element not shown
D)the copper changes to chlorine in compound II
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