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Chemistry Review 1
Test Description: Review for Chapters 3 & 5
Instructions: Answer all questions to get your test result.
1) Which of the following describes a mixture?
A
Made up of two ore more substances that keep their own identities.
B
Can be separated only by chemical means.
C
Formed from two or more substances chemically combined.
D
Made up of two or more substances joined in a specific ratio.
2) Which of the following is an alkali metal?
A
Zinc
B
Aluminum
C
Gold
D
Potassium
3) Which of the following is composed of elements combined in a specific ratio?
A
suspension
B
solution
C
compound
D
colloid
4) Which of the following is true of particles in solution?
A
Particles are large.
B
Particles scatter light.
C
Particles settle out.
D
Particles cannot be filtered out.
5) What element does not follow the patterns of the rest of the periodic table?
A
Helium
B
Potassium
C
Sodium
D
Hydrogen
6) Which of the following does NOT describe a suspension?
A
Particles settle out over time.
B
Particles can be seen.
C
Particles scatter light.
D
Particles are soluble.
7) Elements in a family/group on the periodic table
A
have the same atomic number.
B
are always in the same phase of matter.
C
form a row on the periodic table.
D
have similar properties.
8) Which of the following increases the solubility of a gas in a liquid?
A
Decreasing the amount of liquid.
B
Increasing the temperature.
C
Decreasing the temperature.
D
Stirring.
9) Which element has the atomic number of 12?
A
Hydrogen
B
Zinc
C
Carbon
D
Magnesium
10) On the periodic table, magnesium and chlorine are located in period 3. What is one difference between the two elements?
A
Chlorine and magnesium atoms will each combine with the same elements to form compounds.
B
Chlorine atoms have more electrons in their outer shell than magnesium atoms.
C
Magnesium atoms combine more easily with other atoms in Group 2.
D
Magnesium atoms are more reactive than chlorine atoms.
*select an answer for all questions
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