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Chemistry Flashcards

1
Q

What is condensation

A

A gas to liquid

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1
Q

What is evaporation

A

A liquid to gas

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2
Q

What does potable mean

A

Safe to drink

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3
Q

What is desalination

A

removal of salt from water

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4
Q

How do you test for starch

A

Use iodine
Starch - Blue/black
No starch - Orange

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5
Q

How do you test for Chlorine gas

A

Litmus paper

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6
Q

What is an endothermic reaction

A

a chemical reaction that takes in heat

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7
Q

What is an exothermic reaction

A

A chemical reaction that releases heat

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8
Q

Factors that affect the rate of reaction

A

Temperature
Concentration
Catalyst
Surface area
Pressure

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9
Q

What does the word Inert mean

A

Non-reactive

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10
Q

Describe the arrangement of a solid

A

Very close together
Vibrates
Regular pattern

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11
Q

Describe the arrangement of a liquid

A

Close
Moves over each other
Randomly arranged

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12
Q

Describe the arrangement of a gas

A

Far apart
Particles move at fast pace
Randomly arranged

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13
Q

What is sublimentation

A

A solid to a gas

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14
Q

What is depostition

A

A gas to a Solid

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15
Q

What is melting

A

A solid to a Liquid

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16
Q

What is Freezing

A

A liquid to a solid

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17
Q

What is a melting point

A

in which a solid starts to turn into a liquid at a specific temperature

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18
Q

What is a boiling point

A

in which a liquid starts to turn into a gas at a specific temperature

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19
Q

What is Complete combustion

A

The reaction of a substance with oxygen

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20
Q

What is incomplete combustion

A

The reaction of a hydrocarbon with an insufficient amount of oxygen

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21
Q

What is group 1 on the periodic table called

A

Alkali metals

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22
Q

What is group 2 called on the periodic table called

A

Alkane earth metals

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23
Q

What is group 7 called on the periodic table called

A

Hallogens

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24
What is group 8 called on the periodic table called
noble gases
25
What is an isotope
An element with the same protons but different neutrons
26
What substances do ionic bonds contain
Metal + non-metal
27
What substances do covalent bonds contain
Non-metal + non-metal
28
What substances do metallic bonds contain
Metal + Metal
29
Are covalent forces weak or strong
weak
30
Are metallic forces strong or weak
Strong
31
Are ionic forces strong or weak
Strong electrostatic forces
32
How is a ionic bond structured
Form a lattice of ions
33
How is a covalent bond structured
A nucleus containing protons and neutrons surrounded by electrons
34
How is a metallic bond structured
arranged in a regular pattern
35
What does a ionic bond do with electrons
Transfers
36
What does a covalent bond do with atoms
Shares
37
What does a metallic bond do with atoms
Imbedded in a sea of delocalised electrons
38
What does universal indicator tell us
how acidic or how alkaline a substance is
39
What does litmus paper tell us
whether a substance is an acid or an alkali
40
What colours does methyl orange indicator emit when presented with a substance
Acid - red/orange Neutral - yellow Alkaline- yellow
41
What colours does phenolphthalein indicator emit when presented with a substance
Acid - clear Neutral - clear Alkali - pink
42
does reactivity in group 1 increase or decrease as you down
increase
43
Does reactivity in group 7 increase or decrease as you go down
decrease
44
What are bases
Substances that react with acids
45
what colours does litmus paper indicator emit when presented with a substance
Acid - Red Neutral - Purple Alkaline - Blue
46
Why is metal a good conductor of electricity
Delocalised electrons can move and carry electrical energy through the metal
47
What happens to an atom when it contains extra neutrons
becomes unstable/radioactive
48
what can be used to extract a metal from ores
electrolysis
49
What equipment do you need for filtration
Beaker, conical flask, filter paper and funnel
50
What is the mean rate of reaction
product formed/time taken
51
How do you test for hydrogen
Light splint (makes squeaky pop if its hydrogen)
52
How do you test for Carbon dioxide
Lime water (Goes cloudy if CO2)
53
How do you test for Oxygen
Glowing splint
54
What is crude oil made of
Hydrocarbons
55
What is an alkane
A group of hydrocarbons where there are only single covalent bonds between carbon atoms
56
How many carbon atoms does methane have
1
57
How many carbon atoms does ethane have
2
58
How many carbon atoms does propane have
3
59
How many carbon atoms does butane have
4
60
what does homologous mean
same structure
61
What is an alkene
A Hydrocarbon with a double covalent bond
62
What happens when we crack and alkane
we get an alkane and an alkene
63
what is the word equation for incomplete combustion
Oxygen + Fuel --) Carbon monoxide + Water + soot
64
What is the word equation for complete conbustion
Oxygen + fuel ---) carbon dioxide + water
65
describe current
The flow of charged particles
66
What is a positive ion called
Cation
67
What is a negative ion called
Anion
68
What is ionisation
The loss or gain of an electron
69
What is electrolysis
The process of splitting up ionic compounds
70
What is oxidation
The gain of oxygen but the loss of electrons
71
What is reduction
The gain of electrons but the loss of oxygen
72
What does Ar mean
Atomic mass
73
What does Mr mean
formula mass
74
What do alkalis release when dissolved in water
OH- ions
74
What do acids release when dissolved in water
H+ ions
75
What are the 3 main acids
Sulphuric acid Nitric acid Hydrochloric acid
76
Why do metals have high boiling points
needs high levels of thermal energy to break solids strong structure

Lessons (5 decks)

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