Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science Y8 > Elements, Compounds and Mixtures > Flashcards

Elements, Compounds and Mixtures Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

How many types of atom are in an element?

A

1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How many types of atom are in a compound?

A

2 or more

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Are elements in compounds chemically combined?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Are elements in mixtures chemically combined?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What do chemical formulae show?

A

They are used to describe compounds - e.g. H2O is two hydrogen atoms and one oxygen atom which have been chemically combined.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How many elements or compounds is a pure substance made of?

A

1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Do compounds have fixed melting and boiling points?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Do mixtures have fixed melting and boiling points?

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which of the two, compound or mixture, can be separated by physical means?

A

Mixture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Describe a solution:

A

A solution is made when a soluble solid dissolves in a liquid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the liquid part of a solution called?

A

Solvent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the solid part of a solution called?

A

Solute

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the other name for evaporation?

A

Crystallisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Describe evaporation:

A

The solvent will evaporate leaving behind the solute.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is group 1 of the periodic table commonly known as?

A

The alkali metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the properties of group 1 on the periodic table?

A

Very reactive, very soft, low melting point and low density.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Where do the transition metals sit on the periodic table?

A

The middle block

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Are transition metals hard or soft?

A

Hard

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Are transition metals good electronic conductors?

A

Yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Do transition metals have a high or low melting and boiling point?

A

High

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is group 7 of the periodic table known as?

A

Halogens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Are halogens metallic or non-metal elements?

A

Non-metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How many atoms form the simple molecules of halogens?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the name of the bond that links the atoms together in halogens?

A

A covalent bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Describe a covalent bond:

A

a bond between atoms that share electrons to achieve a full outer shell of electrons.

26
Q

As you move down the halogens in the periodic table, do the melting and boiling points increase or decrease?

A

Increase

27
Q

Which group do the noble gases belong to?

A

Group 0

28
Q

What does the name ‘inert gases’ mean?

A

Very unreactive gases.

29
Q

Do noble gases exist as single atoms?

A

Yes

30
Q

Do noble gases have low or high boiling points?

A

Very low

31
Q

Why do the boiling points increase as you go down group 0?

A

The atoms are larger with stronger intermolecular forces, therefore more energy is required to break the forces and allow boiling.

32
Q

Name the following symbols: H, He, Li, Be, B.

A

Hydrogen, Helium, Lithium, Beryllium, Boron.

33
Q

Give the chemical symbols for: carbon, nitrogen, oxygen, fluorine and neon.

A

C, N, O, F and Ne

34
Q

Name the following symbols: Na, Mg, Al, Si, P

A

Sodium, magnesium, aluminium, silicon, phosphorous.

35
Q

Give the chemical symbols for: sulfur, chlorine, argon, potassium and calcium.

A

S, Cl, Ar, K, Ca.

36
Q

Give the chemical symbol for: copper, gold, silver, mercury, manganese, iron

A

Cu, Au, Ag, Hg, Mn, Fe

37
Q

Name the following symbols: Xe, Sn, I, Pb, Zn, Br, As

A

Xenon, tin, iodine, lead, zinc, bromine, arsenic.

38
Q

What are the three things that usually affect the state of a substance?

A

Material, pressure, temperature.

39
Q

Define volume and identify which state has a definite volume:

A

Volume is the space that something takes up - liquid and solid.

40
Q

Do liquids have a definite shape?

A

No, they match the shape of the container.

41
Q

Do gases usually have a high or low density?

A

Low

42
Q

Are liquids easily compressed and why?

A

No, because the particles are still packed close together, liquids can’t easily be compressed and keep the same volume

43
Q

Do solids flow?

A

Yes and no - but for simpletons; no

44
Q

Fill in the blanks: the particles in a ___ stay the ___ whether it is a ___, ___ or a ___. What changes is the arrangement of the particles and their ___.

A

The particles in a SUBSTANCE stay the SAME whether is is a SOLID, LIQUID or GAS. What changes is the arrangement of the particles and their ENERGY.

45
Q

Which has the least energy: solids, liquids or gases?

A

Solids.

46
Q

Order solids, liquids and gases from strongest to weakest forces of attraction between particles.

A

Solids, liquids, gases

47
Q

Describe the arrangement of particles in solids.

A

Held close together, in fixed positions, with regular arrangement but do vibrate.

48
Q

Which state would usually have the lowest density?

A

Gas

49
Q

From the following description, identify the state; particles are free to move quickly in all directions.

A

Gas

50
Q

From the following description, identify the state; particles close together, free to move past each other, constantly moving in all directions.

A

Liquid

51
Q

Who created the first version of the periodic table|?

A

Mendeleev

52
Q

What are the vertical columns in the periodic table called?

A

Groups

53
Q

What are the horizontal rows in the periodic table called?

A

Periods

54
Q

Identify the type of element from this description: good conductors of heat and electricity, high melting and boiling point, sonorous, ductile, malleable.

A

Metals

55
Q

Give three properties of non-metals.

A

Low melting and boiling point, brittle, dull and poor conductors.

56
Q

What is the liquid called in the filtration process?

A

Filtrate

57
Q

What is the solid caught in the filter called?

A

Residue

58
Q

When two different elements combine, what does a compound usually end with?

A

‘-ide’ e.g. carbon dioxIDE

59
Q

When three or more different elements combine, and one is oxygen, what is the usual ending?

A

‘-ate’ e.g. copper sulfATE

60
Q

What would you call a solution that won’t dissolve anymore solute at that temperature?

A

Saturated

61
Q

Why does solubility increase with temperature?

A

Because the particles move faster.

62
Q

True or false: all solutes dissolve in all solvents.

A

False.

Science Y8 (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions