Chapter 2 Flashcards

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1
Q

Matter

A

anything that contains mass

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2
Q

Elements

A

cannot be broken down chemically into smaller parts

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3
Q

Compound

A

contains 2 or more elements

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4
Q

What are the four elements of life?

A

Carbon, Oxygen, Nitrogen, and Hydrogen

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5
Q

Mass Number is equivalent to what?

A

protons + neutrons

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6
Q

What is a covalent bond?

A

forms between atoms when electrons are shared

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7
Q

Regarding bonding what is unique about molecules?

A

2 or more covalently bonded atoms

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8
Q

What does it mean for a bond to be polar covalent?

A

atoms have different electronegativity and therefore the electrons are pulled closer to one atom

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9
Q

What is an ion?

A

the result of an atom gaining or loosing an electron

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10
Q

What is a cation?

A

an atoms with more protons than electrons

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11
Q

What is an anion?

A

an atom with more electrons than protons

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12
Q

What is an ionic bond?

A

An attraction between oppositely charged atoms

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13
Q

What is a hydrogen bond?

A

a weak attractive bond between hydrogen bonds

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14
Q

What are van Der Waals interactions?

A

weak attractions between molecules to parts of molecules that result from transient local partial charges

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15
Q

When is chemical equilibrium reached?

A

when the forward and reverse reaction rates are equal

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