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Science States Of Matter > Science exam questions > Flashcards

Science exam questions Flashcards

(97 cards)

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1
Q

What is volatile substances

A

Volatile substances can vaporise

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2
Q

To call something matter what does the item need to have?

A

Mass and volume

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3
Q

How much kinetic energy does the solid, liquid and gas have?

A

Solids - not much kinetic energy they can only vibrate
Liquids - more kinetic energy than a solid
Gas - have the most kinetic energy of them all

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4
Q

What are the properties of a Solid?

A

They have a fixed shape and volume
The particles don’t have a lot of kinetic energy they can only vibrate
They are in a fixed position

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5
Q

What are the properties of a Liquid?

A

The particles are close together but they can move around
Doesn’t have a fixed shape
Has a fixed volume
Has more kinetic energy than a solid

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6
Q

What are the properties of a Gas?

A

Move around freely
They have the most kinetic energy
They don’t have a fixed shape or volume

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7
Q

What is tensile strength?

A

Tensile strength is force needed to break something

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8
Q

What is Compressional Strength?

A

Compressional strength is when a substance can withstand force

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9
Q

What state of matter can and can’t be compressed?

A

Solids and liquids can not be compressed only gas can

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10
Q

What is diffusion?

A

Spontaneous spreading of a substance through a liquid or gas

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11
Q

In which state of matter can diffusion occur fastest?

A

Diffusion occurs faster in Gas

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12
Q

What is density?

A

Mass of a certain volume of a substance

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13
Q

What is the formula for density?

A

Mas
———- = Density
Volume

Or mass divided by volume equals density

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14
Q

What is chemical properties?

A

Chemical properties is how the substance reacts in a chemical reaction. Eg: permanent colour change, permanent change of state

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15
Q

What is physical properties?

A

Physical properties is what we can observe and measure without changing its state eg: colour, texture, boiling point and density

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16
Q

When there is one or more cells what is it called?

A

Multicellular

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17
Q

What is another name for one cell

A

Single cellular or uni celluar

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18
Q

What are the 2 types of microscopes?

A

Stereo and light microscope

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19
Q

How do you prepare a slide?

A

First you get a slide and put a thin layer of the organism. You then add a tiny bit of water on top. If the organism is clear you can add a stain. Then you add the cover slide on top.

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20
Q

What is stain made of?

A

Iodine

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21
Q

What’s are the 11 things in a microscope?

A 
Eye piece
Microscope tube
Corse focus knob
Fine corse focus knob
Arm
Objective lense
Slide clips
Mirror
Stage
Base
Revolving nose peice
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22
Q

Cell membrane

A

Controls the entry and exit of the cell

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23
Q

Cell wall

A

The layer surrounding the cell membrane

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24
Q

Nucleus

A

Controls the centre of the cell

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25
Cytoplasm
A cell inside the cell membrane which Contains organelles
26
Vacuoles
Large Storage compartment in plant cells
27
Ribosomes
Creates protein for the cell
28
Mitochondria
Powerhouse of the cell
29
Chloroplasts
Allows the plant to make food out of of photo synthesis
30
What is the process of mitosis
``` Parent cell | \/ Dna replicates | \/ Daughter cells ```
31
Prokaryotic cells are?
The most primitive cellular forms on earth and they are unicellular
32
Eukaryotic cells are?
More complex and are multicellular
33
Steam is a...
Liquid not a gas
34
What is melting point?
A temperature where a substance melts
35
What is boiling point?
A temperature where a substance boils
36
2 types of strength
tensile and compressional
37
What is hardness
The ability to scratch a substance with another substance
38
What is viscosity
Thickness or gooyness of a liquids
39
What is conductivity
How easy something moves through a substance
40
What is heat capacity
How much heat is needed to increase the temperature of a substance
41
What is compressibility
Ability of substance to be compresses | Liquids and solids can not be compressed
42
What is heating particles
All objects and substances expand what the temperature increases
43
What is Particle pressure
The corse of air pushing against something | Eg air pressure
44
What is the atomic theory of matter
All substances are made up of particles called atoms
45
What is an element
A pure substance made up of one type atom
46
The periodic table is arranged by...
In order of the size of their atoms
47
What are horizontal rows called
Periods
48
Vertices rows are called...
Groups
49
What are the 3 main sections of the periodic table made from
Metoloids Metals Non metals
50
First 20 of the periodic table
``` Hydrogen Helium Lythium Beriliun Boron Carbon Nitrogen Oxygen Florine Neon Sodium Magnesium Aliminium Silicone Phosphorous Sulphur Chlorine Argon Potassium Calcium ```
51
What is the symbol for hydrogen
H
52
What is the symbol for helium
He
53
What is the symbol for lithium
Li
54
What is the symbol for berilium
Be
55
What is the Symbol for boron
B
56
What is the symbol for carbon
C
57
What is the symbol for nitrogen
N
58
What is the symbol for oxygen
O
59
What is the symbol for florine
F
60
What is it he symbol for neon
Ne
61
What is the us boo for sodium
Na
62
What is the symbol for magnesium
Mg
63
What si the symbol for aluminium
Al
64
What is the symbol for silicon
Si
65
What is the symbol for phosphorous
P
66
What is the symbol for sulphur
S
67
Watusi the symbol got clorine
Cl
68
What is the symbol for argon
Ar
69
What is the symbol for potassium
K
70
What is the symbol for calcium
Ca
71
What are molecule
Groups of 2 or more atoms that have bonded
72
Gravitational potential energy
When you lift an object
73
Solar energy
Uses solar cells to create electricity
74
Chemical potential energy
Found in food and drinks. It acts as a source of energy for anything that is living
75
Kinetic energy
Everything with potential to move
76
Electromagnetic energy
Used to describe energies from space
77
Elastic potential energy
Energy stored through stretching and squashing
78
Sound energy
Vibrations going back and forth creating sound
79
Electrical energy
Energy associated with electric charges. It's at a standstill or moving
80
Nuclear energy
A dangerous chemical reaction used to create electricity
81
Thermal energy
Heat energy. Created by friction, burning or gas
82
Biomass energy
Energy deprived from plants and animals
83
Energy can not be...
Created or destroyed
84
Energy efficiency is..
Calculation of the percentage of useful energy and non useful Calculation Output divided by input X 100
85
Advantages of renewable energy
Sustainable | Environmentally friendly
86
Disadvantages of renewable energy
Difficult to generate | Relies of weather
87
Advantages of non renewable energy
Cheep | Easy availability
88
Disadvantages of non renewable energy
Eventually runout | Damages the environment
89
What are the 3 magnifications
10x4 10x10 10x100
90
What is a solid to a liquid called
Melting
91
What is a liquid to a gas called
Vaporisation
92
What is a gas to a liquid called
Condensation
93
What is a liquid to a solid called
Solidification
94
What is a solid to a gas
Sublimation
95
Why don't solids diffuse
They are in a fixed position
96
Do liquids diffuse
They diffuse slowly and don't move very far
97
Do gases diffuse
It diffuses easily because they move freely and quickly

Science States Of Matter (1 decks)

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