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Gen Chem Utube > atomic structure > Flashcards

atomic structure Flashcards

1
Q

what is chemical symbol

A

The big letter or 2 letters that signify a certain element. (Ex; C for carbon)

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2
Q

where is the atomic number located

A

bottom left of chemical symbol

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3
Q

how is a elements atomic number determined?

A

the number of protons in the nucleus.

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4
Q

what charge do protons have

A

+1

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5
Q

what is a protons mass

A

1 atomic mass (amu)

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6
Q

how is nuclear charge determined

A

total number of protons

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7
Q

what does the number of protons in a element’s nucleus determine

A

The number of protons will determine what specific element is. (Ex; iron, gold)

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8
Q

where is a elements atomic mass number

A

top left above symbol

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9
Q

how is mass number calculated

A

protons + neutrons in the nucleus.

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10
Q

what is the mass of a neutron

A

1 amu

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11
Q

what is the charge of a neutron

A

0

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12
Q

what is an isotope

A

atoms with the same amount of protons but diffrent amounts of neutrons.

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13
Q

how is a elements charge calculated

A

protons - electrons

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14
Q

where is an elements charge located

A

top right above symbol

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15
Q

what is a electrons charge

A

-1

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16
Q

how much is a electrons mass

A

0 amu (not used when calculating mass of element)

17
Q

what is a element with a positive charge called

A

cation

18
Q

what is an element with a negative charge

A

anion

19
Q

What are the 2 nuclear forces in a nucleus

A

Electromagnetic force, strong nuclear force

20
Q

Electromagnetic force

A

Electric force that causes positive charged protons to separate from each other due to magnetic forces.

21
Q

The strong nuclear force

A

Attractive force that pulls neutrons and protons together

22
Q

How is an atoms nucleus not blown apart from electromagnetic force?

A

The strong force that attracts protons and neutrons together must be stronger than the electromagnetic force in order to hold the nucleus together.

23
Q

Mass defect

A

The mass of a nucleus is always less than the sum of the individual protons and neutrons

24
Q

What is the mass in mass defect turned into

A

Energy

25
Q

Exothermic process

A

A process that releases energy

26
Q

Endothermic processes

A

Requires energy

27
Q

Nuclear binding energy

A

Energy required to split atom into protons and neutrons

28
Q

What kind of process is nuclear binding process and what kind of charge does it require

A

Endothermic, which means it requires energy. This means the charge will always be positive.

Gen Chem Utube (1 decks)

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