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CHEMISTRY S2 > Module One > Flashcards

Module One Flashcards

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1
Q

What is an atom?

A

It is the smallest particle of matter

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2
Q

What is the periodic table arranged of?

A

120 different elements

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3
Q

How many types of atom does an element have?

A

Only 1

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4
Q

Are elements natural or man-made?

A

BOTH! Some are natural some are man-made

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5
Q

What 2 elements are liquid at room temperature?

A

Mercury(Hg) and Bromine(Br)

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6
Q

What does ‘period’ mean in chemistry terms?

A

A HORIZONTAL row in the periodic table

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7
Q

What does ‘groups’ mean in chemistry terms?

A

The columns of the periodic table

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8
Q

What is group one on the periodic table?

A

The Alkali metals

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9
Q

What is group 7 in the periodic table?

A

The Halogens

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10
Q

What is group 8 of the periodic table?

A

The Noble Gasses

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11
Q

What is groups 2&3 in the periodic table?

A

The transition elements

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12
Q

Are elements given a symbol?

A

Yes

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13
Q

What side of the periodic table are metals on?

A

The Left hand side

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14
Q

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

A

The Right hand side

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15
Q

What are 2 facts about metals?

A

They are all shiny, and they are all conductors

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16
Q

What are 2 facts about non-metals?

A

They are all dull, and insulators (except carbon (graphite))

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17
Q

How are Compounds formed?

A

When elements react together

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18
Q

Do compounds have the same properties as the elements they were made from? Yes or No

A

No, they have different properties

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19
Q

What are the elements in a compound like?

A

They are chemically bonded and not easy to separate

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20
Q

If a compound name ends in ‘…ide’ what does else does it contain?

A

Nothing, just the elements that made it

21
Q

If a compound name ends in ‘…ite or …ate’ what else does it contain?

A

The element oxygen

22
Q

What can electrolysis be used for?

A

To break a compound into its elements

23
Q

How many new substance are formed during a physical change?

A

None

24
Q

Are physical changes easy to reverse?

A

Yes

25
Q

What are changes of state?

A

Physical changes

26
Q

What are some examples of changes of state?

A

Sublimation, evaporation, condensation, melting, freezing

27
Q

What do all chemical reactions involve?

A

The formation of one or more new substances

28
Q

Are chemical changes easy to reverse?

A

No

29
Q

How can chemical reactions be identified?

A

Colour change, gas given off, and precipitate formed

30
Q

What is the difference between chemical and physical changes?

A

Chemical changes involve the formation of one or more new substances, however physical changes involve no new substances being made

31
Q

How can chemical reactions be identified?

A

By energy changes

32
Q

What are exothermic reactions?

A

When energy is released into the surroundings so the products have less chemical energy than the reactants

33
Q

What are endothermic reactions?

A

It is when reactions take in energy from the surroundings so the products have more chemical energy than the reactants

34
Q

What is a reactant?

A

A substance that undergoes change during a reaction

35
Q

What is a product?

A

The substance you are left with at the end of a chemical reaction

36
Q

What is the state symbol for a solid?

A

s

37
Q

What is the state symbol for a gas?

A

g

38
Q

What is the state symbol for a liquid?

A

l

39
Q

What is the state symbol for a solution or solvent?

A

aq

40
Q

What does volatile mean?

A

Evaporates easily

41
Q

What does flammable mean?

A

Burns easily

42
Q

What does viscous mean?

A

Thick, not runny

43
Q

What is refinery gas’s boiling point and what is it used as?

A

25oC and it’s used as a fuel

44
Q

What is petrols boiling point and what is it used as?

A

40oC and it’s used as a fuel for cars

45
Q

What is Naptha’s boiling point and what is it used as?

A

110oC and it is used as a fuel for chemical production

46
Q

What is Kerosine’s boiling point and what is it used as?

A

180oC and it is used as Jet fuel

47
Q

What is diesel oils boiling point and what is it used as?

A

260oC and it is used as fuel for diesel engines

48
Q

What is Residues boiling point and what is it used as?

A

360oC and it is used as fuel for ships, lubricating oil, and road surfaces

CHEMISTRY S2 (2 decks)

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