WorksheetsActivate Y8 C2.1-2.3
Total questions: 20
Worksheet time: 10mins
Sugar is the ............. because it dissolves in water.
solution
solubility
solvent
solute
Water is the ............. because sugar dissolves in it.
solution
solubility
solvent
solute
When a solute is added to a solvent, we get ................
a solution
a soluble substance
another solvent
another solute
If the substance is able to dissolve in a solvent, it is
dissolvable.
insoluble.
soluble.
melted.
20g of sugar is added to 100g of water.
What is the mass of the sugar solution?
80g
100g
110g
120g
Sam heats a solid sample and plots the temperature every minute. From the graph, we know that the sample is ........
impure because the graph goes up.
impure because it does not have a sharp melting point.
pure because the graph goes up.
pure because it has a sharp melting point.
Which is NOT a compound?
water
sodium chloride
sulfur
carbon dioxide
................ is made up of two or more different substances joined together chemically.
A mixture
A compound
An element
Iron is heated strongly with sulfur. The equation is:
Iron + sulfur ---> .........................
iron sulfur
iron sulfide
iron sulfite
iron sulfate
It is easy to separate a ................
mixture
compound
The diagram shows ......
a compound of 2 elements.
a mixture of 2 elements.
a mixture of 2 compounds.
You cannot change the amounts of substances in a mixture.
True
False
It depends
An impure substance does not have a sharp melting point.
True
False
It depends
The solubility of a substance always increases with rise in temperature.
True
False
It depends
Sea water is a mixture of water, salts and other impurities.
True
False
It depends
When the maximum mass of a solute has dissolved in a solvent, we say the solution is now .................
full
saturated
soluble
complete
We can tell if a solution is saturated because there will be some undissolved solute left behind.
True
False
Sand cannot dissolve in water. We say that sand is .........
undissolvable
non-soluble
insoluble
unsoluble
............ is the mass of substance that can dissolve in 100g of water at that temperature.
Solubility
Saturation
Mixture
Compound
The table shows the mass of sugar that can dissolve in water at different temperature. Our conclusion is this:
As temperature increases, solubility of sugar
increases.
decreases.
remains the same.
