WorksheetsYear 8 Chemistry Revision 2025
Total questions: 55
Worksheet time: 46mins
Matter is
Anything that has volume
Anything that has mass
Anything that has mass and volume
What state of matter does the picture below represent?
solid
liquid
gas
plasma
What is a Solid?
Matter that has a fixed shape and size.
Matter that has a fixed size and no fixed shape
Matter that has no fixed shape or size
Matter that has no fixed shape and size
The state of matter that keeps its shape and volume when it is placed in a different container is called ______.
gas
liquid
solid
The state of matter that expands to fill its container is called ______.
gas
liquid
solid
The diagram shows arrangement of particles in a
Solid
Liquid
Gas
Define a liquid.
Matter that has fixed shape but no fixed volume
Matter that has fixed shape and fixed volume
Matter that has fixed volume, but no fixed shape
The particles in the picture are tightly held together with very tiny movement. They have shape and fixed volume. Therefore, the picture represents _________.
solid
liquid
gas
plasma
In which state of matter will there be the LARGEST space between molecules?
Solid
Liquid
Gas
The measure of how much space something takes up is ______.
matter
mass
volume
density
What state is represented in the gif?
Solid
Liquid
Gas
Which state of matter has the highest kinetic energy?
Which state of matter has the lowest kinetic energy?
The missing word in the blue box is
melting
evaporating
freezing
sublimating
The missing word in the blue box is
melting
freezing
sublimation
condensation
The missing word in the blue box is
melting
freezing
condensation
evaporation
The state of matter at point 1 is a ___________
solid
liquid
gas
all of the above
The state of matter at point 5 is a ____________
solid
liquid
gas
all of the above
What change of state occurs at point 4?
solid to liquid
liquid to gas
gas to liquid
liquid to solid
Is the image a heating curve or cooling curve?
heating
cooling
Ice will float because maximum density is achieved at 4 degrees Celsius, after which the density decreases
TRUE
FALSE
Which state of matter has the lowest density?
solid
liquid
gas
Which is the least dense?
hot water
cold water
When you push down the handle of a bike pump, and block the end, the air volume__________ and the air pressure __________:
increases, increases
increases, decreases
decreases, increases
decreases, decreases
Particles move ______ when heat energy is applied
faster
slower
A hot air balloon works because
hot air rises, some air escapes, and the density decreases
hot air sinks, no air escapes, and the density increases
hot air rises, no air escapes, and the density decreases
hot air sinks, some air escapes, and the density increases
Diffusion is the net movement of particles from an area of ______ concentration to _______ concentration
low, high
high, low
which image has the lease energy?
A
B
C
they all have the same
Change of state from liquid to gas is called
Freezing
Melting
Boiling
Condensing
Sublimation
Change of state from gas to liquid is called
Freezing
Melting
Boiling
Condensing
Sublimation
What state is C-D?
Solid
Liquid
Gas
What state is E-F?
Solid
Liquid
Gas
What change of state is B-C?
Melting/freezing
Boiling/Condensing
What change of state is D-E?
Melting/freezing
Boiling/Condensing
When we add heat to particles, we are adding:
Electricity
Energy
More Particles
Which object is LESS DENSE?
Object B
Object A
What does DENSITY measure?
The weight of an object.
The mass of an object.
The amount of mass per volume of an object.
The length of an object.
1 of the 5 main ideas of the particle model is
The particles never move in any state of matter
The particles only move in a liquid and gas
The particles in all states of matter are always moving
Only the particles in water move
Which of the following will not take the shape of a container?
Solid
Liquid
Gas
Plasma
How do particles move in a liquid?
Vibrate in a fixed spot
Move freely, far apart and at high speed
Move freely, but remain close
When we cool a gas to a liquid...
Particles speed up so that attractive forces can't hold them in a fixed position
Particles slow down so that attractive forces can keep them close together
Particles speed up so that attractive forces can't keep them close together
Particles slow down so that attractive forces can hold them in a fixed position
How do gases behave in a sealed container?
Cluster together
form a solid
They take the shape of their container
leak out
When we add heat to something....
It gains energy
It loses energy
What is compressibility?
The ability to squash a substance because there are spaces between the particles
The ability of a liquid to flow
The ability of a substance to allow electricity to pass throughout the substance
The mass of substance dissolved in a given volume of solvent
What is a particle?
A very tiny object such as an atom or molecule
A large object that can be seen with a microscope
A substance that cannot be seen with a microscope
A form of matter
What is the particle model?
A way to think about how substances behave in terms of small, moving particles
A model of the atom
A model of the solar system
A model of the human body
What does it mean to evaporate?
Change from liquid to gas at the surface of a liquid, at any temperature
Change from solid to liquid
Change from gas to liquid
Change from gas to solid
