Unit 2 Flashcards

1
Q

What is an atom?

A

The smallest particle of an element that retains the chemical properties of that element.

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2
Q

What is the nucleus?

A

A small region in the center of the atom.

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3
Q

What is a proton’s location?

A

The nucleus.

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4
Q

What is the symbol of a proton?

A

p+

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5
Q

What is a proton’s charge

A

+1

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6
Q

Proton’s mass number

A

1

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7
Q

Electron symbol

A

e-

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8
Q

Electron charge

A

-1

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9
Q

Electron mass number

A

0

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10
Q

Electron location

A

Electron cloud

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11
Q

Neutron symbol

A

n0

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12
Q

Neutron charge

A

0

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12
Q

neutron mass number

A

1

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13
Q

neutron location

A

nucleus

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14
Q

mass number

A

number of protons plus number of neutrons in the nucleus

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15
Q

positively charged ion

A

cation (pawsitively charged)

16
Q

negatively charged ion

A

anion (onion makes you cry)

17
Q

when an atom loses electrons

A

becomes a cation

18
Q

when an atom gains electrons

A

becomes an anion

19
Q

isotope is

A

atom with the same number of protons but different number of neutrons

atomic number stays the same but mass number changes

20
Q

relative atomic mass is

A

the comparison of masses of atoms against each other

21
Q

what is the standard atomic mass

A

Carbon-12

22
Q

average atomic mass

A

weighted average of the masses of every naturally occurring isotopes of the element

23
Q

what mass is listed on the periodic table

A

the average atomic mass

24
Q

how to find average atomic mass

A

[(mass# isotope1)(relative abundance)]
[mass# isotope2)(relative abundance)
+ _________________________
total is average atomic mass

25
Q

Percent abundance formula

A

(1st isotope mass)(1st isotope percent abundance) + (2nd isotope mass)(2nd isotope percent abundance - 1st isotope percent abundance) = average mass of element

26
Q
A