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Revision 2021 ( all unit test ) > Science > Flashcards

Science Flashcards

monday revision

1
Q

The smallest units of matter that have the properties of an element.

A

Atom

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2
Q

Substances made of one type of atom.

A

Element

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3
Q

Substances made of two or more different elements chemically bonded
together.

A

Compound

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4
Q

An arrangement of elements in the order of their atomic numbers.

A

Periodic Table

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5
Q

The columns running down the periodic table.

A

Groups

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6
Q

The rows running across the periodic table

A

Periods

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7
Q

The mass of an atom, determined by the sum of the protons and neutrons in
the nucleus.

A

Atomic Mass

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8
Q

A description of how a chemical acts or behaves

A

Property

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9
Q

A material which allows electricity or heat to pass through it.

A

Conductor

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10
Q

A quantity which has size only e.g. distance

A

Scalar

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11
Q

A push, a pull or a twist.

A

A Force

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12
Q

The unit for force.

A

Newton

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13
Q

The equipment used to measure the size of the force.

A

Newtonmeter

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14
Q

A force acting between objects that are physically touching

A

Contact force

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15
Q

A force acting between objects that are physically separated.

A

Non-contact force

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16
Q

The force acting on an object because of the pull of gravity. (W = mg)

A

Weight

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17
Q

The centre of mass is the point at which the mass of a body is thought to be
concentrated.

A

Centre of Gravity

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18
Q

A force created by large objects pulling other objects towards them .

A

Gravity between planets

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19
Q

An upward force experienced by an object in water.

A

Upthrust

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20
Q

The measure of how much energy is transferred when a force moves an
object.

A

Work done

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21
Q

A single force which can replace all the forces acting on an object and have
the same effect.

A

Resultant force

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22
Q

An object that has a resultant force of 0 because the forces are equal and in
opposite directions

A

Balanced force

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23
Q

An object that has a resultant force of more than 0.

A

Unbalanced force

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24
Q

A vector, it is speed in a particular direction

A

Velocity

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25
Q

Produces eggs and is where the foetus develops after fertilisation.

A

Female reproductive

system

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26
Q

Produces sperm to fertilise the eggs

A

Male reproductive system

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27
Q

The fusing of the nucleus of the male gamete with the nucleus of the female
gamete producing a zygote

A

Fertilisation

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28
Q

The rows running across the periodic table.

A

Periods

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29
Q

The mass of an atom, determined by the sum of the protons and neutrons in
the nucleus.

A

Atomic Mass

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30
Q

A description of how a chemical acts or behaves.

A

Property

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31
Q

The material can be hammered or pressed into shape without breaking or
cracking.

A

Malleable

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32
Q

The female gamete which is also known as an egg.

A

Ova

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33
Q

The glands where sperm (male gamete )and the hormone testosterone are
produced.

A

Testes

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34
Q

A muscular tube that leads from the cervix to the outside of the body;where
the penis is placed during intercourse.

A

Vagina

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35
Q

Connects the ovary to the uterus and is usually the site of fertilisation.

A

Oviduct

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36
Q

A muscular bag where a foetus develops during pregnancy

A

Uterus

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37
Q

The material can be stretched out into a wire

A

Ductile

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38
Q

A quantity which has both size and direction e.g. velocity

A

Vector

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39
Q

The release of a mature egg during the menstrual cycle

A

Ovulation

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40
Q

If the egg is not fertilised, the uterus is released; the period.

A

Menstruation

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41
Q

The developing baby is called this for the first 9 to 10 weeks.

A

Embryo

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42
Q

The process of change in a child’s body when it matures into an adult

A

Puberty

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43
Q

When the developing embryo becomes embedded in the uterus lining.

A

Implantation

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44
Q

Anchors the foetus in the uterus and provides nutrients and oxygen as well as
supporting the removal of waste

A

Placenta

45
Q

Surrounds and protects the foetus in the uterus

A

Amniotic fluid

46
Q

Flexible tube connecting the foetus to the placenta

A

Umbilical cord

47
Q

The dense centre of the atom which consists of protons and neutrons

A

Atomic Nucleus

48
Q

Negatively charged subatomic particles which orbit the nucleus of the atom.

A

Electrons

49
Q

A positively charged subatomic particle found in the nucleus of the atom

A

Proton

50
Q

A subatomic particle with no charge found in the nucleus of the atom.

A

Neutron

51
Q

The number of protons in the nucleus of an atom. (number of protons =
number of electrons).

A

Atomic number

52
Q

The sum of the protons and neutrons in the nucleus of an atom

A

Atomic Mass

53
Q

The arrangement of electrons in shells of an atom

A

Electronic Structure

54
Q

An object that has a resultant force of more than 0

A

Unbalanced force

55
Q

An idea that explains how or why something happens.

A

Hypothesis

56
Q

A statement suggesting what you think will happen in an

experiment/investigation

A

Prediction

57
Q

The variable that must be kept constant so that it doesn’t affect the outcome of
the investigation. (variable = something that can change in an experiment)

A

Control variable

58
Q

The variable that is changed in an experiment; it is what we are investigating.
(variable = something that can change in an experiment)

A

Independent variable

59
Q

The variable that is measured and recorded for each change of the independent
variable. (variable = something that can change in an experiment)

A

Dependent variable

60
Q

The identification and evaluation of potential harm caused by something.

A

Risk assessment

61
Q

Something that could cause harm.

A

Hazard

62
Q

A measure taken in advance to prevent something dangerous from happening.

A

Precaution

63
Q

A substance that can dissolve/ burn your skin or other materials

A

Corrosive

64
Q

A material that ignites easily.

A

Flammable

65
Q

A small adjustable gas burner used in laboratories as a source of heat.

A

Bunsen burner

66
Q

A tube with a flat base that has a graduated scale on the side so that you can
measure a volume of liquid.

A

Measuring cylinder

67
Q

A flask with a narrow neck which allows reactants to be swirled safely

A

Conical flask

68
Q

A glass container with a flat bottom to hold liquids

A

Beaker

69
Q

A result that does not fit the expected pattern.

A

Anomalous result

70
Q

A graph that represents categorical data in rectangular columns

A

Bar graph

71
Q

A graph with points connected by lines to show how something changes in
value

A

Line graph

72
Q

What does S.A.L.T. stand

for?

A

Scale, Axis, Label and Title. We can use this to remember the sequence of
graph plotting.

73
Q

This is worn to protect us in the lab e.g. safety goggles

A

Safety equipment

74
Q

The sum of all values divided by the total number of values (also referred to as
an average).

A

Mean

75
Q

This is the simplest unit of a living organism.

A

A cell

76
Q

This is a partially permeable barrier and controls what goes in and out of the
cell

A

Cell membrane

77
Q

This is a jelly-like substance in cells where chemical reactions occur.

A

Cytoplasm

78
Q

This contains DNA and controls the cell.

A

Nucleus

79
Q

A sub-cellular structure where respiration takes place to make energy.

A

Mitochondrion

80
Q

A sub-cellular structure responsible for protein synthesis

A

Ribosome

81
Q

Organelles found in both

animal and plant cells.

A

Cell membrane, cytoplasm and nucleus.

82
Q

Magnification formula

A

Magnification = size of image / actual size

83
Q

Cells which have genetic material contained in a nucleus and membrane bound
organelles.

A

Eukaryotic

84
Q

Cells which do not have a nucleus nor membrane bound organelles.

A

Prokaryotic

85
Q

An object, or group of objects that interact.

A

A system

86
Q

A measure of the energy stored in a substance due the vibration and motion of
particles (changes can cause heat to be lost or gained).

A

A thermal energy store

87
Q

A measure of the energy stored in a moving object

A

A kinetic energy store

88
Q

A measure of the energy stored based on its height above the Earth

A

A gravitational energy store

89
Q

The unit used to measure energy

A

Joules (J)

90
Q

A measure of the energy stored when a material is stretched or compressed.

A

Elastic energy store

91
Q

A measure of the energy stored in the bonds of chemical compounds. This
energy is released when a chemical reaction takes place .

A

Chemical energy store

92
Q

Energy cannot be created or destroyed. It can only be transferred from one type
to another

A

The law of conservation of

energy

93
Q

A finite resource that cannot be replaced and will run out e.g.: fossil fuels

A

Non- renewable

94
Q

A resource that can be replaced as it is used and will not run out e.g. tidal
power

A

Renewable

95
Q

The three fossil fuels

A

Formed millions of years ago: coal, oil and natural gas

96
Q

Seven renewable energy

resources

A

Geothermal power, solar power, hydroelectric power, biomass, wind power, tidal
power and wave power can all be used to create electricity.

97
Q

Something with stored energy that can be released in a useful way.

A

Energy resource

98
Q

A substance that can be burned to release energy

A

Fuels

99
Q

Used to describe ways in which energy is wasted. The energy has spread out
or heats up the environment.

A

Dissipated

100
Q

The three states of matter

A

Solid (s), liquid (l) and gas (g) are the way particles are arranged.

101
Q

The process of turning a solid to a liquid when it is heated (particles gain
energy).

A

Melting

102
Q

The process of turning a liquid to a gas when it is heated to its boiling point
(particles gain energy

A

Boiling

103
Q

The process of turning a liquid to a gas despite being below its boiling point

A

Evaporation

104
Q

The process of a gas turning into a liquid when it is cooled (particles lose
energy)

A

Condensing

105
Q

Magnification = size of image / actual size

A

Magnification formula

106
Q

Cell membrane, cytoplasm and nucleus.

A

Organelles found in both

animal and plant cells

107
Q

Organelles found in both

animal and plant cells

A

Energy cannot be created or destroyed. It can only be transferred from one type
to another

108
Q

Solid (s), liquid (l) and gas (g) are the way particles are arranged.

A

The three states of matter

Revision 2021 ( all unit test ) (17 decks)

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