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Chemistry yr9 Elements CCT1 revision > Chem > Flashcards

Chem Flashcards

1
Q

What are the horizontal rows on the periodic table called?

A

periods

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2
Q

What are the vertical columns on the periodic table called?

A

groups

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3
Q

What is group 1 of the periodic table called?

A

alkali metals

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4
Q

What is group 2 of the periodic table called?

A

alkaline earth metals

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5
Q

What is the section in the middle of the periodic table called?

A

transition metals

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6
Q

What is group 7 in the periodic table called?

A

the halogens

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7
Q

What is group 0 in the periodic table called?

A

the noble gases

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8
Q

What side of the periodic table are the non-metals on?

A

right

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9
Q

What is an atom?

A

The smallest particle of a chemical element that can exist.

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10
Q

What is an element?

A

A substance consisting of atoms which all have the same number of protons.

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11
Q

Balance the equation:
Mg+O2→MgO

A

2Mg+O₂→2MgO

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12
Q

Balance the equation H₂+O₂→H₂O

A

2H₂+O₂→2H₂O

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13
Q
A

BaCl₂+LiSO₄→2LiCl+BaSO₄

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14
Q

magnesium+oxygen→

A

magnesium oxide

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15
Q

Definition of insoluble

A

A substance that does not dissolve.

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16
Q

Definition of mixture

A

Two substances that are mixed but not chemically joined.

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17
Q

Definition of distillation

A

Separates substances with different boiling points.

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18
Q

Soluble definition

A

A substance that dissolves.

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19
Q

Filtration definition

A

Separates insoluble substance from soluble substances.

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20
Q

Compound

A

Atoms of 2 or more elements that are chemically joined.

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21
Q

Crystallisation

A

Used to obtain a soluble substance from a solution.

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22
Q

Which separation technique separates a liquid from the solid dissolved in it?

A

simple distillation

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23
Q

Which separation technique separates miscible liquids that dissolve in each other?

A

fractional distillation

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24
Q

Which separation technique separates soluble substances?

A

chromatography

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25
Q

Which separation technique separates insoluble solids from liquids?

A

filtration

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26
Q

Which separation technique separates a solid from the liquid dissolved in it?

A

crystallisation

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27
Q

Which separation technique works by the solution becoming too concentrated for all the solid to remain dissolved?

A

crystallisation

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28
Q

Which separation technique works by the liquid evaporating but not the solid?

A

simple distillation

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29
Q

Which separation technique works by an insoluble substance not passing through filter paper?

A

filtration

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30
Q

Which separation technique works by one or more insoluble liquid being more attracted to a solid such as paper and therefore not travelling as far as the other?

A

chromatography

31
Q

Which separation technique works by liquids with higher boiling points staying in the flask until those with lower boiling points have evaporated?

A

fractional distillation

32
Q

What is the use of chromatography?

A

To identify the dyes used to colour foods.

33
Q

What is the use of crystallisation?

A

To obtain pure crystals of compounds used in medicine.

34
Q

What is the use of simple distillation?

A

To obtain fresh water from seawater.

35
Q

What is the use of fractional distillation?

A

To separate crude oil into different fuels such as petrol and diesel.

36
Q

What is the use of filtration?

A

To remove solids before waste water is purified.

37
Q

When did we discover that everything was made of matter?

A

1803

38
Q

Who discovered that everything was made of matter?

A

John Dalton

39
Q

Who suggested that elements contain identical atoms?

A

John Dalton

40
Q

Who discovered electrons?

A

JJ Thomson

41
Q

What do you call tiny particles with a negative charge?

A

electrons

42
Q

Who suggested that an atom is a positively charged sphere with negative electrons distributed throughout it?

A

JJ Thomson

43
Q

What did Thomson’s model become known as?

A

the plum pudding model

44
Q

Who tested the plum pudding model?

A

Geiger and Marsden

45
Q

When was the plum pudding model tested?

A

1909

46
Q

What did Geiger and Marsden do?

A

Set up a very thin layer of of gold foil and fired alpha particles.

47
Q

What happened to the alpha particles in the gold foil?

A

Most went straight through but some were deflected.

48
Q

What did Geiger and Marsden prove?

A

Atoms have a mass in the middle.

49
Q

Who suggested that an atom is mostly empty space with its positive charge and most of its mass is a tiny central nucleus?

A

Rutherford

50
Q

What do electrons orbit?

A

The nucleus

51
Q

Which particle was discovered to change the model of an atom?

A

electron

52
Q

What type of particle was directed at the gold atoms?

A

alpha

53
Q

Which particle has the lowest mass?

A

electron

54
Q

Which scientist first suggested that electrons orbit the nucleus at specific distances?

A

Neils Bohr

55
Q

Atoms of the same element have the same atomic number because they have the same number of _______.

A

protons

56
Q

Atoms have no overall charge because they have the same number of _______ and _________.

A

protons, electrons

57
Q

Separating blue food colour from a mixture of food colours is an example of ______________.

A

chromatography

58
Q

Separating copper sulphate from copper sulphate solution is an example of ________________.

A

crystallisation

59
Q

Scientist now know that atoms are actually made from even smaller particles. What are the three types?

A

proton
neutron
electron

60
Q

Protons have what charge?

A

+1

61
Q

Neutrons have what charge?

A

0

62
Q

Electrons have what charge?

A

-1

63
Q

Protons and _______ have the same mass.

A

neutrons

64
Q

number of protons + number of neutrons →

A

mass number

65
Q

If an atoms has mass number 16 and atomic number 8, how many protons, neutrons and electrons are there?

A

8,8,8

66
Q

Whilst atoms of a given element always have the same number of protons, they may have different numbers of neutrons. Atoms which differ in this way are called _________.

A

isotopes

67
Q

Which type of substance is hydrogen?

A

element

68
Q

Sand can be separated from a mixture of sand and water by __________.

A

filtration

69
Q

Suggest what would happen to the temperature of the water as it flows through a condenser?

A

it gets warmer

70
Q

How do you obtain sodium chloride solution by crystallisation?

A

Heat up the solution until the liquid evaporates.

71
Q

How is the electron arrangement is written?

A

2,8,8

72
Q

What is the maximum electrons held in the 1st shell of an atom?

A

2

73
Q

What is the maximum electrons held in the 2nd shell of an atom?

A

8

74
Q

What is the maximum electrons held in the 3rd shell of an atom?

A

8

Chemistry yr9 Elements CCT1 revision (2 decks)

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