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Chemistry > Exam Practice Y7 > Flashcards

Exam Practice Y7 Flashcards

1
Q

What does the moderate hazard symbol mean?

A

This may be a moderate risk to health

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2
Q

What does the flammable symbol mean?

A

This may catch fire suddenly, especially if near a flame

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3
Q

What does the toxic symbol mean?

A

This is a poison

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4
Q

What does the explosive symbol mean?

A

This may explode it is not usually kept in schools or colleges

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5
Q

What does the corrosive symbol mean?

A

This can dissolve or buy many things such as metal skin, bones, plastic and paper

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6
Q

What is a tripod used for?

A

Who sing a beaker/flask to put on top of a Bunsen burner?

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7
Q

What is a gauze used for? 

A

Supporting a beaker or flask and spreading the heat from the flame

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8
Q

What is a Bunsen burner used for?

A

Heating things

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9
Q

What is an evaporating basin used for

A

Evaporating water from the solution

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10
Q

What is a funnel used for?

A

Separating and insoluble solid from a liquid

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11
Q

What is a rubber bung used for?

A

Keeping things in a tube or flask 

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12
Q

What is a rubber bung with a hole used for?

A

The hole is to put a thermometer in it so it can be put in the liquid without any gases, escaping

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13
Q

When do you get a roaring Flame?

A

When the air hole is fully open, it is blue, loud and hard to see

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14
Q

When do you get Medium flame? 

A

When air hole is half open. It’s an orange colour

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15
Q

When do you get a safety flame?

A

When air hole is closed. Orange colour

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16
Q

Properties of a solid

A

Fixed volume, do not flow high density

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17
Q

Properties of a liquid

A

Fixed volume, flows, no fixed shape, medium density

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18
Q

Properties of a gas

A

No fixed volume, no fixed shape, will spread out until container completely filled

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19
Q

What is diffusion?

A

The movement of a substance from a area of high concentration to an area of low concentration until evenly spread

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20
Q

Is diffusion quicker in gases or solids?

A

Diffusion happens quicker in gases as the particles have more energy and are moving faster

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21
Q

What is a physical change?

A

Physical changes do not involve any chemical reactions and say new substances are formed and they are reversible

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22
Q

What are chemical changes? 

A

When a chemical reaction happens, new substances are formed they however are irreversible

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23
Q

What is the difference between chemical changes and physical changes

A

Physical changes are reversible chemical changes are irreversible

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24
Q

What is the element symbol for hydrogen?

A

H

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25
Q

What is the element symbol for lithium?

A

Li

26
Q

What is the element symbol for beryllium?

A

Be

27
Q

What is the element symbol for sodium?

A

Na

28
Q

What is the element symbol for magnesium?

A

Mg

29
Q

What is the element symbol for potassium?

A

K

30
Q

What is the element symbol for calcium?

A

Ca

31
Q

What is the element symbol for helium? 

A

He

32
Q

What is the element symbol for boron?

A

B

33
Q

What is the element symbol for carbon?

A

C

34
Q

What is an atom?

A

A small particle from which all substances are made

35
Q

What is an element?

A

A substance made up of only one type of atom

36
Q

What is a molecule?

A

A particle made from atoms chemically joined together

37
Q

What is a compound?

A

A substance made from atoms of different kinds, chemically joined together

38
Q

What is a mixture?

A

More than one substance contains different types of particles that are not joined together

39
Q

What is a solvent? 

A

A liquid that does the dissolving, for example, water

40
Q

What is this solute?

A

What is dissolved in a solvent example, salt

41
Q

What is soluble?

A

Something that is able to be dissolved, example, salt

42
Q

What is Insoluble 

A

Something not able to dissolve example, sand

43
Q

What is a solution?

A

The solvent and solute mix together, example, salt, and water dissolved

44
Q

What is solubility?

A

How much is something example salt it takes to stop dissolving

45
Q

What is miscible?

A

When a liquid is mixed well with another liquid, and does not form separate layers

46
Q

What does it mean by immiscible?

A

They do not mix well with other liquids and form separate layers example, oil and water

47
Q

What does it mean by filtrate?

A

A liquid that has passed through the filter

48
Q

What does it mean by residue?

A

Something that remains after the main part has gone

49
Q

What does it mean by distillate?

A

A liquid product condensed from vapour during distillation

50
Q

Does the solubility of a liquid increase or decrease the higher the temp 

A

The solubility of a solid in a liquid increases the higher the temperature

51
Q

Does the solubility of a gas increase or decrease the higher the temperature?

A

The solubility of gases in a liquid Decrease the higher the temperature 

52
Q

What is waters boiling point?

A

100 degrees Celsius

53
Q

What is waters melting and freezing point?

A

0 degrees Celsius

54
Q

What test is done to see if there is carbon dioxide and what is the positive result?

A

Lime water turns from clear to cloudy

55
Q

What is done to see if there is oxygen and what is the positive result?

A

Glowing splint relights when oxygen there

56
Q

What is done to test if there is hydrogen?

A

Lit splint will make a squeaky pop when hydrogen there

57
Q

What tests done to see if there is water? 

A

Anhydrous copper solfataras, turns from blue to white and cobalt chloride paper turns from blue to pink.

58
Q

what colour does litmus paper turn?

A

If it is blue paper, it turns red when there is an acid, It’s red paper it turns blue when there is an alkaline

59
Q

What colour does universal indicator turn?

A

A colour on the pH scale, depending on if it is a strong acid, weak acid, strong alkaline, or we calculate or neutral 

60
Q

What is another name for an alkaline?

A

A base

Chemistry (4 decks)

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