Name: ______________________
Class: _________________
Date: _________
ID: A
Chemistry Semester 1 Practice Final
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. Which one(s) have a mass of 1 amu?
a. electron
b. proton
c.
d.
proton and neutron
electron and proton
____
2. The tremendous amount of energy released by nuclear reactions is required to bond _____ together.
a. protons
c. neutrons
b. electrons
d. the nucleus
____
3. Which category of elements have the property of being malleable and ductile?
a. gases
c. metalloids
b. metals
d. nonmetals
____
4. Which is the correct measurement for the location marked by the arrow?
a.
b.
____
17.076
17.8
c.
d.
17.76
17.7
5. The accepted value is 29.35. Which correctly describes this student’s experimental data?
Trial
Measurement
1
29.48
2
28.97
3
29.27
a.
b.
accurate but not precise
precise but not accurate
c.
d.
both accurate and precise
neither accurate nor precise
____
6. The accepted value for a quantity is 5.67 g. If the measured value is 5.89 g, what is the percent error?
a. 1.04%
c. 3.74%
b. 3.74%
d. 3.88%
____
7. How many significant digits are in the value 0.0050340?
a. 3
c. 7
b. 5
d. 8
____
8. According to rounding rules for addition, the sum of 27.1, 34.538, and 37.68 is ____.
a. 99.318
c. 99.31
b. 99.3
d. 99
____
9. Which is the state of matter that has an indefinite shape and definite volume?
a. solid
c. gas
b. liquid
d. plasma
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Name: ______________________
ID: A
____ 10. Which is the state of matter shown in this figure?
a.
b.
solid
liquid
c.
d.
gas
plasma
____ 11. According to the Law of Conservation of Mass, in any chemical change
a. the mass of reactants is greater than the mass of products
b. the mass of reactants is less than the mass of products
c. the mass of reactants is equal to the mass of products
d. the masses of products and reactants have no predictable relationship
____ 12. Which is the product of these numbers, to the appropriate number of significant digits?
56.2 × 9.2057 =
a. 517
c. 517.36
b. 517.4
d. 517.00
____ 13. When you observe a physical property, the substance _________________.
a. changes
c. burns
b. does not change
d. melts
____ 14. Color and shape describe the _______________ of matter.
a. chemical properties
c. appearance
b. chemistry
d. feel
____ 15. When you observe a chemical property, the substance _______________.
a. remains the same
c. burns
b. melts
d. changes
____ 16. Which of the following is an example of chemical change?
a. Filling up a balloon with hot air.
b. Taking a glass of water and freezing it by placing it in the freezer.
c. A plant collecting sunlight and turning it into food.
d. Your dog ripping up your homework.
____ 17. Which is an example of a chemical change?
a. water freezes
c.
b. wood is cut
d.
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bread is baked
wire is bent
Name: ______________________
ID: A
____ 18. Which element does this atom represent?
a. potassium
b. neon
____ 19. Which is the number of neutrons in
a.
b.
35
45
80
35
c.
d.
fluorine
sodium
c.
d.
80
115
Br?
____ 20. Which diagram correctly depicts the general trend in first ionization energy?
a. a
c. c
b. b
d. d
____ 21. Which is the most important characteristic in determining an element’s chemical properties?
a. the number of protons and neutrons in its nucleus
b. which period it is found in
c. the number of valence electrons it contains
d. its outermost energy level
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Name: ______________________
ID: A
____ 22. In the diagram above, 15.999 refers to the element’s
a. atomic mass.
c. atomic symbol.
b. atomic number.
d. state of matter.
____ 23. Unstable nuclei can break apart spontaneously, changing the identity of the _____ .
a. solutions
c. compounds
b. atoms
d. reactions
____ 24. Radioactive decay of 8 1Rb involves _____ , resulting in the formation of
X-ray photon.
a. beta decay
c. gamma emission
b. electron capture
d. positron emission
____ 25. Which element on bombarding with an alpha particle gives
a.
21
10
b.
14
7
Ne
N
c.
13
6
C
d.
16
8
O
____ 26. Which region contains the halogen family of elements?
a. A
c. C
b. B
d. D
4
17
8
O?
8 1Kr
and the emission of an
Name: ______________________
ID: A
____ 27. Which region contains elements with two valence electrons?
a. A
c. C
b. B
d. D
____ 28. Which is the correct formula for the ionic compound that results from these two atoms?
a.
b.
X2 Y5
X5 Y2
c.
d.
X2 Y3
X3 Y2
____ 29. Group 13 elements tend to acquire which charge when they form ions?
a. +3
c. +5
b. -5
d. -3
____ 30. Which is the correct formula for the compound formed between beryllium and nitrogen?
a. BeN
c. Be3 N2
b. Be3 N
d. Be2 N3
____ 31. How many single covalent bonds can halogens form?
a. 1
c. 3
b. 2
d. 4
____ 32. In the compound PCl3 , how many total valence electrons are present?
a. 4
c. 24
b. 8
d. 26
____ 33. Which is the correct name for the compound PCl5 ?
a. monophosphorus tetrachloride
c. phosphorus pentachloride
b. phosphorus chloride
d. pentaphosphorus chloride
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