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Science > Materials, Elements, Compounds And mixtures > Flashcards

Materials, Elements, Compounds And mixtures Flashcards

0
Q

Can i name the three states of matter?

A

Solids, liquids, gases

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1
Q

Can i define matter?

A

Matter is anything which occupies space and which has mass

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2
Q

Can i describe an experiment to show that gas has mass?

A

1) place a deflated balloon on a balance
2) write down the mass of the balloon
3) inflate the balloon by blowing into it and tie a knot
4) write down the new mass of the balloon

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3
Q

Can i describe an experiment to show that gas has a volume?

A

1) place a gas jar and a beehive shell filled with water in a bowk filled with water
2) connect a length of clean rubber and take a deep breath and blow gently into the water
3) watch the bubbles of gas in the water

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4
Q

Can i list three proprieties of a solid?

A

✔️Definite shape
✔️definite volume
✔️do not flow

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5
Q

Can i explain the arrangement of particles in a solid?

A

✔️arranged in a regular way
✔️ cannot move out of position
✔️ particles are packed closely together
✔️strong forces holding the particles together.

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6
Q

Can i list three proprieties of a liquid?

A

✔️No definite shape
✔️definite volume
✔️flow and evaporate

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7
Q

Can i explain the arrangement of particles in a liquid?

A

✔️no regular arrangement
✔️the liquid has no definite shape of its own
✔️can slide
✔️particles are weaker than in a solid

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8
Q

Can i explain the particles in a gas

A

✔️particles are much further apart than in a liquid or a solid
✔️Particles can move quickly into all space available
✔️There are only very weak forces between the particles.

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9
Q

Can i distinguish between melting and freezing?

A

The melting point is a high temperature at which a solid changes to a liquid. The freezing point is a low temperature at which a liquid changes to a solid.

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10
Q

Can i distinguish between boiling and condensing?

A

Boiling is changing a liquid to a gas. Condensing is changing a gas to a liquid.

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11
Q

Can i define and explain evaporation?

A

Evaporation is the changing of an liquid to a gas

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12
Q

Do I know the boiling point of water?

A

100*C

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13
Q

Do i know the boiling point of alcohol?

A

78.37*C

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14
Q

Can i define Element?

A

An element is a substance that cannot be split up into simpler substances by chemical means

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15
Q

Can i define compound?

A

A compound is a substance that is made up of two or more elements combined together chemically

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16
Q

Can i define molecule?

A

A group of atoms bonded together representing the smallest fundamental unit of a chemical compound that can tale part in a chemical reaction

17
Q

Can i define mixture?

A

A mixture consists of two or more different substances mingled with each other but not chemically combined

18
Q

Can i give four differences between a compound and a mixture?

A

1) the amounts of the substances can vary in the mixture but not in the compound
2) a mixture contains two or more substances, a compound is a sing,e substance
3) there are practically no energy changes when a mixture is made, heat is usually taken out or given in when a compound is formed
4) mixtures can be separated back into single elements but compounds cant

19
Q

Can i describe an experiment to compare a mixture of iron and sulfur and iron sulfide?

A

1) mix together iron filings and some sulfur to make a compound
2) using a magnet separate out the iron filings and the sulfur again ( the iron filings will stick to the magnet)
3) now mix the substances together again
4) heat the substance to make a compound using a bunsen burner and a test tube
5) a compound has been made compared to the mixture
6) note how using a magnet you can no longer separate out the iron filings

20
Q

Can i list the first twenty elements?

A

1) hydrogen
2) helium
3) lithium
4) beryllium

5) boron
6) carbon
7) nitrogen
8) oxygen

9) florine
10) neon
11) sodium
12) magnesium

13) aluminium
14) silicon
15) phosphorus
16) sulfur

17) chlorine
18) argon
19) potassium
20) clacium

21
Q

What is the symbol for the element hydrogen?

22
Q

What is the symbol for the element helium?

23
Q

What is the symbol for the element Lithium?

24
Q

What is the symbol for the element Beryllium?

25
Q

What is the symbol for Boron?

26
Q

What is the symbol for Carbon?

27
Q

What is the symbol for Nitrogen?

28
Q

What is the symbol for Oxygen?

29
Q

What is the symbol for Florine?

30
Q

What is the symbol for Neon?

31
Q

What is the symbol for Sodium?

32
Q

What is the symbol for Magnesium?

33
Q

What is the symbol for Aluminium?

34
Q

What is the symbol for Silicon?

35
Q

What is the symbol for phosphorus?

36
Q

What is the symbol for Sulfur?

37
Q

What is the symbol for Chlorine?

38
Q

What is the symbol for Argon?

39
Q

What is the symbol for Potassium?

40
Q

What is the symbol for Calcium?

Science (14 decks)

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