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Chemisty > The Atom > Flashcards

The Atom Flashcards

1
Q

What is the relative charge of a proton?

A

+1 (positive)

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2
Q

What is the relative charge of a electron?

A

-1(negative)

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3
Q

What is the relative charge of a neutron?

A

0(no charge)

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4
Q

What is the relative mass of a proton?

A

1

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5
Q

What is the relative mass of a electron?

A

0.0005

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6
Q

What is the relative mass of a neutron?

A

1

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7
Q

Middle part of the atom?

A

Nucleus

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8
Q

The circle going round the nucleus?

A

The shell

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9
Q

What are the dots on the shell?

A

Electrons

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10
Q

How many electrons are allowed on the 1st shell?

A

2 maximum

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11
Q

How many electrons are allowed in the 2nd shell??

A

8 maximum

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12
Q

How many electrons allowed in the 3rd shell??

A

8 maximum

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13
Q

How many electrons allowed in the 4th shell?

A

18 maximum

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14
Q

What is electronic configuration?

A

A diagram of an element and the sequence

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15
Q

Why does an atom have no overall charge?

A

Element atoms contain equal number of protons and electrons and so have no over all charge

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16
Q

39
K
19

A)What is the mass number?
B)What is the atomic number?
C)How many neutrons?

A

A)39
B)19
C)20

17
Q

How do you find out how many neutrons an element has?

A

Atomic mass- atomic number

18
Q

On the periodic table how many groups are there?

A

8 groups

19
Q

On a periodic table how many periods are there?

A

7 periods

20
Q

If their is 2 protons in a element how many electrons are there?

A

2 because protons and electrons have the same amount of charges in any element

21
Q

What are isotopes?

A

Isotopes are different forms of the same element,which have the same number of protons but a different number of neutrons

22
Q

How do you work out what element belongs in which period?

A

The number of shells which contain electrons is the same number as the period

Chemisty (1 decks)

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