atoms Flashcards

1
Q

where are the electrons in an atom

A

goingg around the nucleus

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2
Q

what’s a protons relative charge

A

+1

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3
Q

what’s a electrons relative charge

A

-1

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4
Q

what’s a neutrons relative charge

A

no charge

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5
Q

what is an element

A

substance made from one type of atom

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6
Q

where are the metals on the periodic table

A

the left

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7
Q

where are the non mental a on the periodic table

A

the right

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8
Q

what are the letters on the periodic table

A

the elements chemical symbol

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9
Q

where are the transitional metals

A

the centre

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10
Q

if there are 10 electrons in an atom- how many protons?

A

10

always the same about of protons and electrons

balanced- no overall electrical charge

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11
Q

what is a compound

A

different types of atoms joined together.

chemical bonds hold them together

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12
Q

what does the nucleus contain

A

protons and neutrons

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13
Q

what is the mass number of an atom

A

the total number of protons and neutrons it contains

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14
Q

what is the atomic number of an atom

A

the number of protons it contains

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15
Q

what is bigger, the atomic number or the mass number

A

the mass number

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16
Q

how do you work out the number of neutrons in an atom

A

mass number - atomic number

17
Q

what are shells

A

the rings of energy that the electrons create around the nucleus

18
Q

how many electrons can the first shell have

A

2

19
Q

how many electrons can every she’ll have (apart from first)

A

8

20
Q

things to remember when doing an electronic structure diagram

A
  1. nucleus is a black spot
  2. energy levels are circles around the nucleus
  3. each electron is shows as a dot or a cross
21
Q

how to use the periodic table to help with an elements electronic structure

A
  1. find out what period it is in (number of shells)

2. find out what group it is in (number electrons in outer shell)

22
Q

what are all substances made up of

A

atoms

23
Q

how many different elements are there

A

about 100

24
Q

what is the point of groups in periodic table

A

the groups contain elements with similar properties

25
Q

what are all substances made up of

A

atoms

26
Q

how many different elements are there

A

about 100

27
Q

what is the point of groups in periodic table

A

the groups contain elements with similar properties

28
Q

what is the overall charge of an atom

A

no charge

same amount of neutrons and electrons

29
Q

do all atoms of the same element have the same number of protons

A

yes

atoms from different elements have different number of protons