Year 8 Term 2 - Compounds Flashcards

1
Q

A ….. contains two or more ….. that are …… combined in fixed …….

A

Compound, elements, chemically, positions

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2
Q

How are compounds named?

A

Based upon elements within them

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3
Q

If 2 elements only are present how do you name the formula

A

Change the end of the second to -ide
E.g: oxygen to oxide
Hydrogen to hydride

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4
Q

If there is a metal (e.g sodium), hydrogen and oxygen how do you name it

A

Sodium hydroxide

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5
Q

If there is a metal, another element and oxygen how do you name it

A

Change end of second element to -ate
E.g: calcium carbonate
Sodium bromate

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6
Q

Copper oxide - what do elements look like and what does compound look like

A

Copper: shiny red/orange solid
Oxygen: colourless gas
Copper oxide: black/red solid powder

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7
Q

Silicon dioxide - what do elements look like and what does compound look like

A

Silicon: shiny grey solid
Oxygen: colourless gas
Silicon dioxide: white powder

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8
Q

Copper sulfate - what do elements look like and what does compound look like

A

Copper: shiny red brown solid
Sulfur: yellow powder
Copper sulfate: blue powder

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9
Q

Iron sulfide - what do elements look like and what does compound look like

A

Iron: shiny silver grey solid
Sulfur: yellow/green powder
Iron sulfide: dull, black solid

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10
Q

Copper carbonate - what do elements look like and what does compound look like

A

Copper: orange/brown solid
Carbon: black powder
Oxygen: colourless gas
Copper carbonate: green powder

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11
Q

Iron sulfate - what do elements look like and what does compound look like

A

Iron: shiny grey solid
Sulfur: yellow powder
Oxygen: colourless gas
Iron sulfate: blue/green solid crystals

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12
Q

How is copper different from copper oxide

A

Copper is orange brown but copper oxide is a black powder

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13
Q

How is silicon different from silicon dioxide

A

Silicon is dark but silicon dioxide is whtie

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14
Q

How is copper different from copper sulfate

A

Copper is orange brown but copper sulfate is blue

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15
Q

How is Sulfur different from copper sulfate

A

Sulfur is yellow but copper sulfate is blue

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16
Q

How is iron different from iron sulfide

A

Iron is shiny but iron sulfide is dull

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17
Q

How is Sulfur different from iron sulfide

A

Sulfur is yellow/green but iron is grey

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18
Q

How is copper different from copper carbonate

A

Copper is orange but copper carbonate is green

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19
Q

How is carbon different from copper carbonate

A

Carbon is black but coppper carbonate is green

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20
Q

How is iron different from iron sulfate

A

Iron is grey but iron sulfate is blue/green

21
Q

How is Sulfur different from iron sulfate

A

Sulfur is yellow but iron sulfate is blue/green

22
Q

Some compounds contain groups of ….. to form …..

A

Atoms, molecules

23
Q

A molecule of e particular compound will always contain .……. of each element, joined together …

A

Same number of atoms, in the same way

24
Q

Carbon monoxide has

A

1 oxygen to 1 carbon

25
Q

Carbon dioxide has

A

1 carbon, 2 oxygen

26
Q

Carbon dioxide formula

A

CO2

27
Q

Nitrogen hydrogen chlorine in ratio 1:4:1

A

NH4Cl

28
Q

Molecules, each containing 4 atoms of phosphorus

A

P4

29
Q

How many numbers of elements in: LiBrO

A

1 x lithium, 1x bromine, 1 x Oxygen

30
Q

How many numbers of elements in: Fe3(PO4)2

A

3x iron, 2x potassium, 8x oxygen

31
Q

How many numbers of elements in: KClO3

A

1 x potassium, 1 x chlorine, 3x oxygen

32
Q

How many numbers of elements in: Na2O

A

2x sodium, 1 x oxygen

33
Q

Name the compound: Al(OH)3

A

Aluminium hydroxide

34
Q

Name the compound: GeS2

A

Germanium sulfide

35
Q

Name the compound: RbNO3

A

Rubidium nitrate

36
Q

how would you draw CO2

A

O-C-O

37
Q

How would you draw C2H4

A

H-C=C-H
H- -H

38
Q

How would you draw CF4

A

F
|
F-C-F
|
F

39
Q

How would you draw How would you draw N3H

A

H- N- H
|
H

40
Q

Group 4 has how many bonds

A

4

41
Q

Group 5 has how many bonds

A

3

42
Q

Group 6 has how many bonds

A

2

43
Q

Group 7 has how many bonds

A

1

44
Q

Group 0 has how many bonds

A

0

45
Q

What does mono mean jn a compound

A

One

46
Q

What does di mean jn a compound

A

Two

47
Q

What does tri mean jn a compound

A

Three

48
Q

What does tetra mean jn a compound

A

4