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Year 8 Chemistry (Mid-Topic Revision) Flashcards | StudBud
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Year 8 Chemistry (Mid-Topic Revision)
Year 8 Chemistry (Mid-Topic Revision)
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#Chemistry #Year8 #Science #Particles #Atoms #Elements #Compounds #Puresubstances #Mixtures
Flashcards
40 cards
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Questions
40
Answers
1
Which
state of matter
can hold its shape and has particles that vibrate on the spot?
Liquid
Plasma
Gas
Solid
2
Calculate the volume of this rectangular box.
2700 cm
2400 cm
270 cm3
2400 cm3
3
Identity the
symbol of the element
shown in the image.
Cu
Co
Ce
C
4
The images shown is a...
Homogeneous mixture
Pure substance
Heterogeneous mixture
Compound
5
Use the image shown to identify which substance is
more dense
?
They have the same density
Solid foam
Liquid water
You cannot tell from the image shown.
6
Dry ice
is...
...frozen carbon monoxide.
...frozen oxygen gas.
...really cold frozen water.
...frozen carbon dioxide.
7
Define
atom
.
1 type of element.
Tiny stuff that make things.
Tiny particles that make up everything.
Tiny round ball-like things.
8
Identify the
symbol for gold
.
Ag
G
Gu
Au
9
State the correct formula for
density.
d = m x v
d = v x m
d = v/m
d = m/v
10
Identify the
symbol for iron
.
Rn
Ir
Na
Fe
11
An alloy such as steel is...
An element
A pure substance
A compound
A mixture
12
All four cubes in the image are the same size. Which material has the
lowest density
.
Steal
Glass
Lead
Foam rubber
13
Glucose (C
6
H
12
O
6
) is a....
Impure substance
Molecule
Lattice compound
Molecular compound
14
All four examples shown are...
Molecules
Compounds
Pure substances
Mixtures
15
What is the
atomic number
for
potassium
?
39.098
39
K
19
16
Identify the correct statement about
density
.
Measures how many particles are in a material.
Measures how much matter is packed into a space.
Measures the weight of a material.
Measures how heavy a substance is.
17
Define
element
.
1 atom (i.e. gold, copper, hydrogen).
A group of atoms.
2 or more types of atoms.
1 type of atom (can be singular or molecular).
18
Identify the
symbol for sodium
.
Hg
S
Pb
Na
19
The images shows different types of...
Monatomic elements
Molecular compounds
Impure substances
Molecular elements
20
Calculate the density of an object with a
volume of 4mL
and a
mass of 2kg.
8000g/cm3
8 g/cm3
800g/cm3
80g/cm3
21
Define
compound
.
1 type of atom (can be singular or molecular).
1 atom (i.e. gold, copper, hydrogen).
A group of atoms.
2 or more types of atoms.
22
The images shows different types of...
Lattice compounds
Molecular elements
Molecular compounds
Impure substances
23
Particle theory model
states that all matter consists of...
...many, compounds and elements.
...many, very small particles.
...many, very small particles, which are constantly moving.
...many, very small bits of stuff.
24
Identify the phase change from
liquid to solid.
Freezing
Melting
Evaporation
Sublimation
25
The image shown is a...
Lattice compound
Impure substance
Molecular element
Molecular compound
26
What is the most likely
element
in this balloon. Use the particles shown to inform your answer.
Air
Carbon dioxide
Helium
Oxygen
27
Define
molecule
.
A group of atoms.
1 type of atom (can be singular or molecular).
2 or more types of atoms.
1 atom (i.e. gold, copper, hydrogen).
28
The images shows different types of...
Impure substances
Monatomic elements
Molecular elements
Molecular compounds
29
Which is the
most dense
?
Concrete (2.40g/cm3)
Gold (18.9g/cm3)
Mercury (13.6g/cm3)
Copper (8.90g/cm3)
30
How many protons does
potassium
have?
19
K
39.098
39
31
Saltwater mixture is...
A compound
A pure substance
A solution
Heterogenous
32
Identify which is
NOT
a pure substance.
X
Z
Y
W
33
What is
Brownian motion
?
The name given to a substance dissolving in a solution.
Theory that particles make up all matter.
Random motion of tiny particles suspended in a gas/liquid.
Random motion of tiny elements.
34
Which
state of matter
takes the shape of its container and its particles can be compressed.
Gas
Solid
Liquid
Plasma
35
Identify the phase change from
solid to liquid.
Sublimation
Evaporation
Freezing
Melting
36
Which
state of matter
takes the shape of its container and its particles can easily break apart
Solid
Gas
Liquid
Plasma
37
Which is
NOT
an observation that helps to support particle theory?
Smells
Dissolving
Brownian motion
Mixing
38
When looking at the periodic table
metals
are usually located on the...
Top
Right
Left
Bottom
39
Identify which is
NOT
a correct statement about individual particles.
Divisible (can be split in half)
Attracted to each other
Constantly in motion
Hard & incompressible (cannot be squashed)
40
As particles are
heated
they...
...move faster with more energy.
...expand and slower faster with more energy.
...contract and move faster with more energy.
...expand and move faster with more energy.
