Physical Science Test Review Ch 4/5 (page 2)

What are the properties of metals?

• Metals are good conductors of electricity.

• Metals are poor conductors of heat.

• Metals are non-malleable.

• Metals are non-ductile.

What happens to the number of valence electrons as you move from left to right across a period?

• The number of valence electrons increases.

• The number of valence electrons decreases.

• The number of valence electrons remains the same.

• The number of valence electrons first increases then decreases.

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What happens to the number of valence electrons as you move from one group to another?

• The number of valence electrons increases.

• The number of valence electrons decreases.

• The number of valence electrons remains the same.

• The number of valence electrons varies unpredictably.

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An element's ability to react chemically is related to what?

• Its atomic number

• Its electron configuration

• Its atomic mass

• Its density

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How can you tell if an element will form compounds?

• By its position in the periodic table

• By its atomic number

• By its atomic mass

• By its color

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What is true about a neutral atom?

• It has more protons than electrons.

• It has more electrons than protons.

• It has an equal number of protons and electrons.

• It has no protons or electrons.

What does the atomic number of an element represent?

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The number of electrons in the outer shell

• The atomic mass of the element

What type of Model does this period show?

Type your answer in the space provided:

Rutherford - Bohr - Thomson

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How many protons does Calcium have?

• 20

• 40.078

• 40

• 2

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How many electrons does Calcium have?

• 20

• 40.078

• 40

• 2

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