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Chemistry: Unit 1
This page was last updated on 15-Jun-02

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Choose the best answer for each question.  At the end of the quiz, click on the "Get Score" button and your quiz will automatically be graded.  The correct reponses will appear in the box underneath your score.

This test has 20 questions and covers the first of eight units in General Chemistry.  Good luck!

1. There are _____ L in 1 ML (Megaliter).
100
1000
1,000,000
0.1

2. There are _____ g in 1 cg.
0.1
0.01
0.001
0.0001

3. If I multiply the following measured values together to get the volume, what is the correct answer? 1.200 cm, 0.35 cm, 0.004 cm
0.001680 cm3
0.00168 cm3
0.0017 cm3
0.002 cm3

4. A measured length of 0.01020 m has _____ significant figures.
2
3
4
5

5. Round off the answer to the following problem correctly: 1.529 x 2.30 x 0.02 = 0.070334
0.07
0.070
0.0703
0.07033

6. If I have high energy light, the frequency is _____, and the wavelength is _____.
low, short
low, long
high, short
high, long

7. What is the symbol for the element tin?
Tn
T
Fe
Sn

8. What is the name of the element whose symbol is S?
Sulfur
Sodium
Silicon
Silver

9. The subatomic particle with the smallest mass is the
proton
neutron
electron
beta

10. Which of the following would be classified as a representative element?
Fe (#26)
K (#19)
U (#92)
Cu (#29)

11. All of the semiconductors belong to which group?
metals
non-metals
representative elements
inner transition metals

12. The element in period 3 which is an alkali metal is
Na
Mg
Li
Ca

13. The process of a neutron striking a heavy nucleus, splitting it into two or more smaller nuclei and releasing energy is called _____.
fission
hydrolisis
fusion
binary replication

14. Which of the following is an isotope of strontium-84 (atomic number = 38)?
calcium-38 (atomic number = 20)
yttrium-84 (atomic number = 39)
rubidium-84 (atomic number = 37)
strontium-85 (atomic number = 38)

15. The density of mercury is 13.0 g/cm3. What is the specific gravity of mercury if 26 g has a volume of 2 mL?
26 g
2 mL
13.0 g/mL
13.0

16. Calcanium (atomic number = 20) and strontium (atomic number = 38) have similar properties because _____.
They both have the same number of electrons in their first shell
They both have the same number of neutrons
They both have the same number of electrons in their outer shell
They both have the same number of electrons total

17. The electron arrangement of aluminum (atomic number = 13) is _____.
2
2, 8, 3
2, 8
2, 11

18. A neutron has a mass of _____ amu and a charge of _____.
1, 0
0, 0
0, 1
1, 1

19. The valence electrons refer to
the number of electrons in the innermost shell
The free-radical electrons
The number of electrons in each shell
The number of electrons in the outermost shell

20. The half-life of iodine-131 is 8 days. If I inject a sample into a person and that sample gives an average of 128 counts per minute over background, what will the number of counts above background be after 24 days?
16 cpm
8 cpm
24 cpm
128 cpm

Score =
Correct answers:



Ready for more?  Try the Chemistry: Unit 2 self-test!

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