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Year 8 > Elements, Compounds and Mixtures ETT > Flashcards

Elements, Compounds and Mixtures ETT Flashcards

1
Q

What is the name of Group 1 elements?

A

Alkali metals

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2
Q

What is the name of Group 7 elements?

A

Halogens

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3
Q

What is the name of Group 0 elements?

A

Noble gases

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4
Q

What happens to the reactivity of Group 1 metals as you go down the group?

A

Reactivity increases

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5
Q

What happens to the reactivity of Group 7 elements as you go down the group?

A

Reactivity decreases

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6
Q

What happens to the melting and boiling points of Group 1 elements as you go down the group?

A

They decrease

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7
Q

What happens to the melting and boiling points of Group 7 elements as you go down the group?

A

They increase

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8
Q

Name the metals in the middle block of the periodic table (between groups 2 and 3)

A

Transition metals

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9
Q

What word means metals can be drawn into a wire?

A

Ductile

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10
Q

What word means ‘makes a ringing sound when hit’?

A

Sonorous

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11
Q

Which word means ‘you can hammer it into different shapes’

A

malleable

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12
Q

Give three properties of metals

A

Any three from:
Good conductor of electricity
Good conductor of heat
Sonorous
High melting point
High boiling point
Malleable
Ductile
Shiny
High density

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13
Q

Give three properties of non-metals

A

Any three from:
Poor conductor of electricity
Poor conductor of heat
Low melting point
Low boiling point
Brittle
Low density

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14
Q

What are the columns in the periodic table called?

A

Groups

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15
Q

What are the rows in the periodic table called?

A

Periods

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16
Q

Where are the metals on the periodic table?

A

On the left

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17
Q

Where are the non-metals on the periodic table?

A

On the right

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18
Q

Complete the equation:

lithium + water –>

A

lithium hydroxide + hydrogen

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19
Q

Complete the equation:

sodium + water –>

A

sodium hydroxide + hydrogen

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20
Q

What gas is produced when an alkali metal reacts with water?

A

Hydrogen

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21
Q

Complete this displacement reaction:

chlorine + potassium bromide –>

A

potassium chloride + bromine

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22
Q

What type of reaction is shown below?

chlorine + potassium bromide –> potassium chloride + bromine

A

Displacement reaction

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23
Q

Name the reaction when a more reactive element replaces a less reactive element

A

Displacement reaction

24
Q

Which group of the periodic table contains unreactive elements?

A

Group 0 / noble gases

25
Q

Name the noble gas used in advertising signs

26
Q

What separation process would you use to separate sand from water?

A

Filtration

27
Q

What word describes a chemical that can’t dissolve?

28
Q

What word describes a chemical that can dissolve?

29
Q

What word describes the chemical that dissolves in a solvent?

30
Q

What is made when a solute dissolves in a solvent?

A

A solution

31
Q

What is the name of the liquid into which a solute dissolves?

32
Q

In a solution of salt water, what is the solute and what is the solvent?

A

Solute = salt
Solvent = water

33
Q

What is a mixture?

A

Two or more elements or compounds not chemically bonded

34
Q

What is a compound?

A

Two or more elements chemically bonded

35
Q

What is the name for a solution when no more solute can dissolve?

A

Saturated solution

36
Q

What does it mean when a chemical has a high solubility?

A

Lots of solute can dissolve

37
Q

How does temperature affect solubility?

A

The higher the temperature, the higher the solubility

38
Q

Name the separation process in the image

A

Distillation

39
Q

Name the separation process in the image.

A

Filtration

40
Q

In the filtration process, what is the substance in the bottom of the conical flask called?

41
Q

In the filtration process, name the substance that stays in the filter paper

42
Q

Name the separation process in the image

A

Chromatography

43
Q

Why is a pencil used to draw the line on chromatography paper?

A

Pencil doesn’t smudge whereas ink would smudge.

44
Q

Name the piece of glass equipment used to stir solute in a solvent

A

stirring rod

45
Q

Name the equipment in the image

46
Q

Name the metal piece of equipment used to put solute into a solvent

47
Q

Name part ‘a’

48
Q

Name part ‘b’

A

filter paper

49
Q

Name part ‘c’

50
Q

Name part ‘d’

A

conical flask

51
Q

Name part ‘e’

52
Q

Describe the process of separating salt water by distillation

A
  • The solution is heated.
  • The water boils at 100 degrees celsius.
  • The water evaporates and turns into steam.
  • The steam moves into the condenser and cools.
  • Steam turns into liquid water.
  • Pure water is collected in the beaker.
  • Salt remains in round-bottomed flask.
53
Q

Does the image below represent an element, compound or mixture?

54
Q

Does the image below represent an element, compound or mixture?

55
Q

Describe how to separate colours from food dye using chromatography

A
  • Draw a pencil line on chromatography paper.
  • Place a dot of each dye on the chromatography paper
  • Place the paper in solvent (solvent must go beneath pencil line)
  • Different colours will separate as they move up the paper
56
Q

How many dots would a ‘pure’ substance leave on chromatography paper?

Year 8 (12 decks)

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