Atomic Structure Flashcards

1
Q

In the P.T, what is a group?

A

A column (there are 8 columns)

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2
Q

Why do elements in the same group have similar chemical properties?

A

They have the same number of outer electrons

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3
Q

What is a period?

A

a row of elements

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4
Q

What groups are very reactive?

A

1+7

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5
Q

What are elements made up of?

A

atoms

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6
Q

Where are Protons and Neutrons found?

A

the nucleus of an atom

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7
Q

Where are electrons found?

A

in electron shells orbiting the nucleus

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8
Q

What is the atomic number used for?

A

to order the elements in the periodic table

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9
Q

What is the charge of a proton

A

+

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10
Q

What is the charge of an electron

A

-

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11
Q

Does a neutron have charge

A

no

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12
Q

What is the mass of a proton

A

1

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13
Q

What is the mass of an electron

A

0

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14
Q

what is the mass of a neutron

A

1

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15
Q

What holds the electrons in place

A

the positive nucleus

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16
Q

What is the mass number?

A

M=Atomic No. + No. of Neutrons

17
Q

What is an ion?

A

An atom which has either gained or lost electrons (they also now have charges due to this)

18
Q

If an atom gains electrons, will it be positive or negative?

A

negative

19
Q

If an atom loses electrons, will it be positive or negative?

A

positive

20
Q

What is an isotope?

A

an element with different mass numbers and No. of Neutrons.

21
Q

What is the R.A.M?

A

the average mass of all isotopes of an element taking into account the number of isotopes.

22
Q

Are metal ions positive or negative?

A

positive

23
Q

Are non metal ions positive or negative?

A

negative