Brainscape's Knowledge GenomeTM

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


See full index

Drama > Science > Flashcards

Science Flashcards

1
Q

What is an element?

A

A substance made of only one type of atom

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

What is a compound?

A

They are different atoms that are chemically bonded

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

What does something being pure mean?

A

It means something that is made of one substance

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

What does something being impure mean?

A

It means when something is mixed with other atoms ,elements and compounds

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

Give some examples of mixtures?

A

-Rocks
-Squash
-Milk
-Sea water

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

What does something being a mixture?

A

Something that contains more than one substance that is not chemically bonded

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

What is a compound ?

A

Two or more atoms chemically bonded

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

What are the three states of matter?

A

Solid , Liquid and Gas

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

What does something insoluble mean ?

A

Something that cannot dissolve

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

What is a solute ?

A

A solid that can be dissolved

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

What is a solvent?

A

A liquid

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

What mixtures can be separated via filtration ?

A

Sand water, Rocks and water and finally orange pulp

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

What is a solution ?

A

When a solid has dissolved into a liquid

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

Name the start and end states for evaporation

A

Liquid -> Gas

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

Name the change of state when a gas becomes a liquid

A

Condensation

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

What is evaporation used to separate?

A

To separate a solid from a liquid

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

What is distillation used to separate?

A

To separate a mixture of solution with different boiling points

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

What three things can forces do to a moving object ?

A

Push , Pull , Twist

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

What effect does air resistance have on a falling object?

A

It slows objects down

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

What is chromatography ?

A

It is used to separate mixture of dyes

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

What two states of matter do particles touch their neighbours ?

A

Solid and Liquid

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

What unit is mass measured in ?

A

KG , G

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

What is mass ?

A

It measures how much stuff is in something

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

What is volume ?

A

How much space a solid has in it

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

What is density ?

A

How much space an object or substance takes up (its volume) in relation to the amount of matter in that object or substance (its mass)

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

What is the equation for density ?

A

g /cm cubed

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

What is the pH of an acidic solution less than?

A

7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What are the chemical properties of metals?

A

->React with oxygen to form a metal oxide
-> It dissolves in water to form an alkaline solution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What are the chemical properties of non -metals?

A

->React with oxygen to form a non - metal oxide
->It dissolves in water to form an alkaline solution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

Name the vertical columns in the periodic table

A

Groups

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Name the horizontal rows in the periodic table

A

Periods

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Do metals or non-metals have a higher boiling points ?

A

Metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What does unreactive mean?

A

They do not react with any solvents

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What is a non - contact force ?

A

A force that does not need contact

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What do opposite charges do ?

A

They attract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

What do like charges do ?

A

They repel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

What is a field ?

A

An area where a force is experienced

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What is the smallest unit of matter ?

A

An atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Name two charged subatomic particles

A

Proton and electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Why do atoms have no overall charge ?

A

Their field protects them

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Name three components found in circuits

A

Switch , Cell and Metre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

What is a current?

A

A flow of charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

What is this –M– ?

A

A motor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Give the units of currents

A

amps(A)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

What is this –A–?

A

An ammeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

What is theory?

A

A description of how a system will behave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

What is a model ?

A

A visual representation of a complicated concept

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

Name a circuit component you need for current to flow ?

A

Cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

The unit for resistance

A

Ohms ,Ω

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

What is a resistance ?

A

The force of repulsion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

Define conductor of electric current ?

A

Where electrons can flow through

51
Q

Define insulator of electric current?

A

Where electrons are stopped from passing through

52
Q

The equation to find resistance

A

Voltage / Current

53
Q

The equation to find weight

A

Mass x Gravitational field strength

54
Q

What is a parallel circuit ?

A

Where the wires are parallel to onen2 ef another

55
Q

Hydrogen chloride

A

Hydrogen, Chlorine

56
Q

Lithium fluoride

A

Lithium , Fluorine

57
Q

What is a combustion reaction?

A

When a fuel reacts with oxygen to make carbon dioxide and water

58
Q

What happens to atoms in a chemical reaction?

A

They are re-arranged

59
Q

What is a ratio?

A

It shows how much of one thing there is compared to the other

60
Q

What is Mass ?

A

The amount of matter in an object

61
Q

What is the law of conservation of mass ?

A

The product is always equal to the mass of reactants

62
Q

The word equation for respiration

A

Glucose +Oxygen -> Carbon dioxide+ Water

63
Q

What type of reaction transfers energy to the surroundings?

A

Exothermic reaction

64
Q

What type of reaction transfers energy from the surroundings?

A

Endothermic reaction

65
Q

How to separate food colourings?

A

Chromatography

66
Q

How to separate insoluble fibre powder and water?

A

Filtration

67
Q

How to separate water and sugar?

A

Evaporation

68
Q

Where are metals found in the periodic table ?

A

The left side

69
Q

Is salt a compound or a mixture?

A

A compound

70
Q

What side of periodic table are metals found in?

A

The left side

71
Q

What are some physical properties of metals ?

A

-Malleable
-Ductile
- Good conductors of heat and electricity
-Shiny
- Tough and strong

72
Q

What are some physical properties of non-metals ?

A

-Brittle
-Bad conductors of heat and electricity
-Dull
-Weak

73
Q

Do Metals or Non-metals react more vigorously with acids?

A

Metals that are high up in the reactivity series, such as potassium, sodium, and calcium, react vigorously with acids

74
Q

Magnesium + Oxygen

A

Magnesium Oxide

75
Q

Calcium + Oxygen

A

Calcium Oxide

76
Q

Iron + Oxygen

A

Iron Oxide

77
Q

How does magnesium react with dilute acid?

A

Very vigorously

78
Q

How does zinc react with dilute acid?

A

It reacts steadily

79
Q

How does Iron react with dilute acid?

A

It reacts steadily

80
Q

How does lead react with dilute acid?

A

It reacts slowly

81
Q

How does copper react with dilute acid?

A

No reaction

82
Q

How does Gold react with dilute acid?

A

No reaction

83
Q

How does magnesium react with oxygen?

A

Burns vigorously

84
Q

How does zinc react with oxygen?

A

Burns less vigorously

85
Q

How does iron react with oxygen?

A

Burns

86
Q

How does lead react with oxygen?

A

Does not burn but forms a layer of oxide on surface

87
Q

How does copper react with oxygen?

A

Does not burn but forms a layer of oxide on surface

88
Q

How does Gold react with oxygen?

A

No reaction

89
Q

What is the unit of energy?

A

Joules , J

90
Q

Name some energy stores ?

A

-Nuclear
-Kinetic
-Chemical
-Elastic
-Thermal
-Magnetic
-Gravitational store

91
Q

What is kinetic energy ?

A

Energy of motion

92
Q

What is the unit energy ?

A

Joules

93
Q

What is the unit of temperature ?

A

C

94
Q

What is the average kinetic energy/speed of the particles?

A

Temperature

95
Q

What is thermal equilibrium?

A

When two object are at the same temperature

96
Q

What is the amount of stuff in a substance called ?

A

It is Mass

97
Q

What is something that requires different amount of energy to heat them?

A

Materials

98
Q

What is the energy equation ?

A

Energy = Mass x Specific heat capacity x temperature increase

99
Q

Describe what happens to the particles in a liquid when it is heated

A

The particles heated makes them energised and the move faster

100
Q

Describe insulators in terms of electrical circuits

A

When the electrical current can’t move freely though a wire

101
Q

What tiny subatomic particles can move freely in a metal wire ?

A

These are called electrons

102
Q

What is convection?

A

Convection is the process of transferring heat through air or liquid currents

103
Q

What is conduction?

A

The transfer of energy, such as heat or an electric charge, through a substance.

104
Q

What is the frequency of a wave ?

A

The frequency of a wave is the number of waves produced by a source each second.

105
Q

These types of waves can be dangerous. Used in sun tan beds and to kill bacteria in water

A

UV rays

106
Q

These allow us to see

A

Visible light

107
Q

These waves are used to kill cancer cells

A

Radiation waves

108
Q

Used for cooking and satellite communication

A

Gamm rays

109
Q

What is a random error?

A

An unexpected change that affects your results

110
Q

What is a systematic error ?

A

Something that consistently affects your results

111
Q

How can you measure a force

A

A newton metre

112
Q

What is the law of conservation of energy ?

A

Energy can’t be created or destroyed

113
Q

What is the equation of work?

A

Force X Distance

114
Q

What is the equation of power ?

A

Energy/Time

115
Q

What is a consumer?

A

An organism that consumes other organisms

116
Q

What is the first type of organism found in a food chain?

A

Producers

117
Q

What does the arrow represent in a food chain?

A

Energy being transferred

118
Q

Independent variable

A

It is a variable that stands alone and isn’t changed by the other variables you are trying to measure.

119
Q

Dependent variable

A

A dependent variable is what you measure in the experiment and what is affected during the experiment.

120
Q

Controlled variable

A

A control variable is anything that is held constant in a study to prevent it from interfering with the results

121
Q

Which element is a shiny, orange-brown element that is an excellent conductor of electricity?

A

Copper

122
Q

Which element is a brittle, yellow element that is used to make fertilisers?

A

Sulfur

123
Q

Which element is a shiny but brittle element that is used in fibre optic cables?

A

Germanium

124
Q

Vertical columns in a periodic table

A

Columns

125
Q

Horizontal columns in a periodic table

A

Rows

126
Q
A

Drama (8 decks)

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