Chapter 2 Flashcards

Chemistry

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1
Q

Number of protons=?

A

Number of electrons

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2
Q

What is the atomic number of magnesium?

A

12

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3
Q

What is the electron shell with the highest amount of energy?

A

outermost shell

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4
Q

Groups in the periodic table show the ______________ an element has.

A

number of valence electrons

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5
Q

What are the alkali metals?

A

lithium, sodium, potassium

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6
Q

Periods in the periodic table show the ______________ an element has.

A

number of electron shells

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7
Q

What is another meaning for unreactive?

A

inert

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8
Q

Difference between ionic bond and covalent bond

A

ionic: lose or gain electrons
covalent: share electrons

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9
Q

sodium + chlorine

A

NaCl

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10
Q

Examples of giant covalent structures

A

diamond, graphite

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11
Q

What are the properties of ionic structures?

A

high melting and boiling point, conduct electricity

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12
Q

What are the properties of covalent structures?

A

low melting and boiling point, do not conduct electricity

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