Chemistry Vocab Flashcards

1
Q

Electron Cloud

A

The regions of space around the nucleus of an atom

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2
Q

Total number of shell an atom can have

A

7

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3
Q

Charge of Protons

A

Positive

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4
Q

Charge of electrons

A

Negative

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5
Q

Charge of nuetrons

A

No charge

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6
Q

Max number of electrons in the first shell?

A

2

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7
Q

Max number of electrons in the second shell?

A

8

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8
Q

Number of electrons that make an atom in the outer most energy level?

A

8

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9
Q

Valence Shell

A

The outer most electron shell of an atom

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10
Q

The type of bond water has

A

A Polar Covalent bond with unequal sharing of electrons

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11
Q

pH units

A

The relative concentration of hydrogen ions in various body fluids is measured in these concentration units

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12
Q

How is the pH scale is expressed?

A

in moles per liter or molarity and pH runs from 0-14 and is logarithmic

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13
Q

One change in pH is equal to what?

A

A tenfold change in hydrogen ion concentration

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14
Q

pH level that is neutral

A

pH=7 ex- absolutely pure distilled water

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15
Q

pH level that is acidic

A

any pH below 7

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16
Q

pH levels that are alkaline

A

any pH level higher than 7

17
Q

pH level of blood in the human body?

A

a pH of 7.35-7.45