Physical Science: The Nature of Matter, Book K

Chapter 1: Atoms, Elements, Compounds and Mixtures

Standardized Test Practice

1.
According to the periodic table block above, how many electrons does an uncharged atom of krypton have?

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A)36
B)48
C)72
D)84
2.
What is krypton's state of matter at room temperature?

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A)liquid
B)plasma
C)gas
D)solid
3.
What is krypton's atomic number?

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A)48
B)36
C)72
D)84
4.
What observation allowed Thompson to discover electrons?
A)Cathode rays were bent toward a magnet.
B)Cathode rays glowed a greenish color.
C)A beam of light traveled from a cathode to an anode.
D)A beam of light produced a shadow on the anode.
5.
Which property of metals means they can be easily bent into various shapes?
A)conductivity
B)malleability
C)ductility
D)luster
6.
Which nonmetal is found on the left side of the periodic table?
A)hydrogen
B)beryllium
C)lithium
D)sodium
7.
The illustration shows Rutherford's gold foil experiment. What happened to most of the particles that struck the gold foil?

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A)passed through, little deflection
B)absorbed by the foil
C)passed through, deflected to sides
D)ricocheted back toward the source
8.
A hydrogen atom always has 1 proton, but it can have 0, 1, or 2 neutrons. What is the mass number for each type of hydrogen atom?
A)0, 1, 2
B)1, 2, 3
C)1, 1, 1
D)1, 2, 2
9.
What does the formula 6H2O2 mean?
A)12 hydrogen and 12 oxygen atoms
B)2 hydrogen and 2 oxygen atoms
C)6 hydrogen and 6 oxygen atoms
D)12 hydrogen and 2 oxygen
10.
Isotopes are defined as atoms that have the same number of which of the following?
A)electrons
B)protons
C)neclei
D)neutrons
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