WorksheetsChemical Science
Total questions: 39
Worksheet time: 20mins
Melting Ice
Physical Change
Chemical Change
Boiling Water
Physical Change
Chemical Change
What is the process by which a chemical change occurs?
Conservation of Matter
Physical Change
Chemical reaction
Condensation
What always happens during a chemical change?
The material and its properties change
The material dissolves
The total mass of the material changes
The material changes state from a solid to a liquid
What is the best definition of a chemical change?
A change in the state of matter in which the form changes but the properties stay the same.
A change in the state of matter in which the material changes into an entirely different material with properties that are different from the original material.
A change in the state of matter in which the material is still the same just in a different form.
Which is not a sign that a chemical reaction has occurred.
A change in mass
bubbling
production of an odor or smell
change in color
What is a solid?
Something that is hard and keeps it's shape
Something that takes the shape of it's container
Something that has moves freely and has no real shape
Something that takes up space and has mass. It can be living or non-living.
What is a liquid?
Something that is hard and keeps it's shape
Something that takes up space and has mass. It can be living or non-living.
Something that takes the shape of it's container.
Something that moves freely and has no real shape
What is a gas?
Something that takes up space and has mass. It can be living or non-living.
Something that is hard and keeps it's shape.
Something that takes the shape of it's container.
Something that moves freely and has no real shape.
How do you change a solid into a liquid?
Add heat
Remove heat
You can't change a solid into a liquid.
Freeze it.
How do you change a liquid into a solid?
Add heat
You can't change a liquid into a solid.
Freeze it
Remove heat
Funnel
Vaccuum filtrations
Very toxic
Radiactive
Hector is standing in a closed room with a balloon filled with helium gas. If Hector pops this balloon, what will happen to the molecules in the helium gas?
They will condense into a cloud around Hector.
They will fall to the floor as a structured solid.
They will expand and flow through the room
They will flow to the floor and form a puddle.
In which state of matter will there be the LARGEST space between molecules?
Solid
Liquid
Gas
Freezing is...
Liquid to gas
Gas to liquid
Solid to gas
Liquid to solid
Which two are gasses?
Oxygen
H2O
Carbon dioxide
Sodium
If something is flammable it is...
easily set on fire
burns very quickly
fireproof
can not be burnt
What does diffusion of gas mean?
changing state from liquid to gas
When you diffuse a bomb
is the process by which a solution or gas moves from high particle concentration areas to low particle concentration areas
is the process by which a solution or gas moves from low particle concentration areas to high particle concentration areas
Which of the following gases is toxic
water vapour
carbon dioxide
helium
carbon monoxide
Which of the following is an example or a high water pressure use
water jet in a fountain
water tap
shower
What items contains high gas pressure?
gas bottles
water bottle
deodorant can
perfume bottle
