Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Chemistry > Reactions, Chemicals, Substances etc. > Flashcards

Reactions, Chemicals, Substances etc. Flashcards

1
Q

What is Hydroxide present in?

A

Alkaline solutions

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

Can simple covalent molecules conduct electricity?

A

No

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

Why do covalent compounds not conduct electricity?

A

Have no free-moving charged particles

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

What force is present between ions?

A

Electrostatic force of attraction

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

What force is present between molecules?

A

Intermolecular force of attraction

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

How big are nanoparticles?

A

Between 1 and 100 nanometres

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

What very useful property do nanoparticles have?

A

Very large surface area : volume ratio

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

Name a product which commonly uses nanoparticles

A

Sun cream

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

Are simple molecular substances usually soluble?

A

Yes

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

Do fullerenes have high or low melting points?

A

Low

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

Do nanotubes have high or low melting points?

A

High

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

What is a substances RFM in grams equal to?

A

Equal to one mole of the substance

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

Why is diamond hard?

A

It is a giant covalent structure, carbon atoms are held by strong covalent bonds

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

What is the typical diameter of a simple covalent compound, such as water?

A

2.8 x 10^-10 m

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

In metres, what is the typical diameter of an atom?

A

1 x 10^-10 m

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

What type of substance usually contains two or more elements?

A

Ionic lattice

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

What is the chemical symbol for hydrochloric acid?

A

HCl

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

What is the chemical symbol for sulfuric acid?

A

H2SO4

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

What is the chemical symbol for iron oxide?

A

Fe2O3

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

What is the chemical symbol for citric acid?

A

C6H8O7

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

Describe the atom arrangement in an ionic lattice

A

A regular arrangement, atoms with different charges are next to eachother

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

Are ionic compounds soluble?

A

Yes

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

Are giant covalent compounds soluble?

A

No

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

Why are metals malleable?

A

Layers of metal ions free to slide over each other when a force is applied

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

What ions do acids produce when dissolved in water?

A

Hydrogen ions, H+

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What ions do alkalis produce when dissolved in water?

A

Hydroxide ions, OH-

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Name 2 standard lab acids

A

Hydrochloric, nitric, sulfuric

28
Q

Name 2 standard lab alkalis

A

Sodium hydroxide, calcium hydroxide

29
Q

Name 3 acids

A

Hydrochloric, nitric, sulfuric

30
Q

Name 3 bases

A

Calcium oxide, magnesium oxide, copper oxide

31
Q

Name 3 alkalis

A

Sodium hydroxide, potassium hydroxide, calcium hydroxide

32
Q

What are the chemical equations for:
-hydrochloric acid
-calcium oxide
-sodium hydroxide

A

HCl
CaO
NaOH

33
Q

What are the chemical equations for:
-nitric acid
-magnesium oxide

34
Q

What are the chemical equations for:
-sulfuric acid
-copper oxide

35
Q

What are the chemical equations for:
-potassium hydroxide
-calcium hydroxide

A

KOH
Ca(OH)2

36
Q

What salts do the following make:
-hydrochloric acid
-sulfuric acid
-nitric acid

A

Chloride
Sulfate
Nitrate

37
Q

What happens to acids in a solution?

A

Dissociate

38
Q

What happens to strong acids in a solution?

A

Fully dissociate

39
Q

What happens to weak acids in a solution?

A

Partially dissociate

40
Q

With higher hydrogen concentration, is pH higher or lower?

41
Q

What is the specific heat capacity of water?

A

4200 J/kg oC

42
Q

What do alkalis release in water?
-what does this do to pH?
-why?

A

Hydroxide ions (OH-)
-lowers pH
-decreases concentration of hydrogen ions (H+)

43
Q

The ________ is logarithmic

44
Q

When pH changes by one, how much does hydrogen ion concentration change by?

45
Q

What is the chemical formula for an ammonium ion?

46
Q

What is the chemical formula for a hydroxide ion?

47
Q

What is the chemical formula for a sulphate ion?

A

SO₄²⁻

48
Q

What is the chemical formula for a carbonate ion?

A

CO₃²⁻

49
Q

What is the chemical formula for a nitrate ion?

50
Q

Acid + ____ -> salt + water

51
Q

___ + base -> salt + water

52
Q

Acid + base -> ______

A

Salt + water

53
Q

Acid + ___ -> salt + hydrogen

54
Q

___ + metal -> salt + hydrogen

55
Q

Acid + metal -> ______

A

Salt + hydrogen

56
Q

___ + carbonate -> salt + water + carbon dioxide

57
Q

Acid + ___ -> salt + water + carbon dioxide

58
Q

Acid + carbonate -> ___

A

Salt + water + carbon dioxide

59
Q

During titration, are the acid and base partially or completely ionised?

A

Completely

60
Q

What does titration result in the formation of?

A

Water and a soluble salt

61
Q

Name the 14 common elements (including carbon and hydrogen) from the reactivity series in decreasing order of reactivity

A

Potassium
Sodium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Lead
Hydrogen
Copper
Silver
Gold
Platinum

62
Q

Name the 5 elements from the reactivity series which are extracted via electrolysis

A

Potassium
Sodium
Calcium
Magnesium
Aluminium

63
Q

Name the 4 elements from the reactivity series which are extracted by reduction with carbon

A

Zinc
Iron
Lead
Copper

64
Q

Name the 3 elements from the reactivity series which don’t need to be extracted
-why do they not need to be extracted?

A

Silver
Gold
Platinum
-are found naturally in their native state and not in an ore

65
Q

Describe a technique to test whether hydrogen gas is produced in a chemical reaction

A

Put a lit splint into the reaction vessel. If hydrogen is present, a squeaky pop can be heard since hydrogen is flammable

66
Q

By what method would iron be extracted from its ore?
-why?

A

Reduction, heated with carbon
-less reactive than carbon so it will be displaced by carbon dioxide

Chemistry (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions