Atomic Structure Flashcards

1
Q

What are the subatomic particles of an atom?

A

Proton, neutron, electron

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2
Q

Relative charge of a proton is..

A

+ 1

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3
Q

Relative charge of a neutron is…

A

0

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4
Q

Relative charge of an electron is…

A

-1

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5
Q

Relative mass of a proton is…

A

1

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6
Q

Relative mass of a neutron is…

A

1

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7
Q

Relative mass of an electron is…

A

Very small , 1/1840

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8
Q

What is atomic number?

A

Number of protons ( and electrons as they have the same amount)

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9
Q

What is mass number?

A

Total number of protons and neurons

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10
Q

What is an atom?

A

An atom is the smallest particle of matter in an element

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11
Q

What is an ion?

A

An ion is a charged atom meaning it has lost or gained electrons

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12
Q

What is a molecule?

A

A molecule is a group of 2 or more atoms that are chemically bonded.

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13
Q

What is an isotope?

A

The same element with different number of neutrons but the same number of protons

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14
Q

Define relative atomic mass

A

It is the average mass of an atom of an element compared to 1/12 of the mass of an atom of carbon12

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15
Q

Define relative formula mass

A

The sum of all the atomic masses of each atom in a molecule

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16
Q

Define isotopic Mass

A

Mass of one atom of one isotope of an element relative to 1/12 of the mass of an atom of carbon-12

17
Q

Define relative molecular mass

A

Sum of the reactive atomic masses of all the atoms in the molecular formula of an element or compound

18
Q

How to work out relative formula / molecular/ isotopic

A

Add up each atomic mass of each compound / molecule ect…

19
Q
A