WorksheetsTerm 3 Pop Quiz (Elements, Compounds, Solutions and Suspensions)
Total questions: 15
Worksheet time: 8mins
Which of the following is an example of the formation of a mixture?
Rust forming on an iron nail.
Sodium and chlorine forming table salt.
Sugar crystals dissolving in water.
Hydrogen and oxygen reacting to produce oxygen.
Which statement identifies why oxygen is classified as a pure substance and air is classified as a mixture?
Oxygen is more reactive than air.
Oxygen goes under a phase change, whereas air is always a gas.
Oxygen has a higher density than air.
Oxygen contains only one substance, but air contains several substances.
Water (H2O), is not found on the periodic table because water is a/an...
atom
mixture
liquid
compound
This picture is an example of ...
element
homogenous mixture
heterogenous mixture
compound
Oxygen and iron combine chemically to form rust. Rust is classified as which of the following?
an atom
a compound
a mixture
an element
substance that dissolves
a solute
a solvent
a solution
unsaturated
substance that dissolve the solute is called
a solution
a suspension
a solubility
a solvent
Look at the diagram. In this diagram, the red dots represent
the solvent
the solution
the solute
a gas
Which of the following is NOT TRUE about Heterogeneous Mixtures?
There will be layers on the mixtures
Solutions are a type of heterogenous mixture
Individual particles are often distinguishable
Suspension is one of example of heterogenous mixtures
When materials combine to form a mixture, they
keep their original properties.
combine in a specific ratio.
react to form a new substance with new properties.
always change their physical state.
A concentrated solution contains...
less solute particles in a fixed amount of solvent than a dilute solution
more solute particles in a fixed amount of solvent than a dilute solution
same amount of solute particles in a fixed amount of solvent than a dilute solution
no solute particles
Many substances dissolve easily in water. What does this tell us about the nature of water?
Water is suitable solute.
Water is colorless
Water is a good solvent
Water is a compound
In an experiment, 2 g of sugar is added to a given amount of solvent at room temperature. Which of the following would increase the time taken for the solute to dissolve completely?
A
B
C
D
Ernesto and Amanda fill two cups with water. They use hot water in one cup and cold water in the other cup. Next, they will stir a spoon of salt into each cup. In which cup will the salt dissolve more slowly?
The salt will not dissolve in either cup
The salt dissolves more slowly in the hot water
The salt dissolves at the same speed in both cups
The salt dissolves more slowly in the cold water
When a solution is saturated:
No additional material will dissolve in it
Two materials have combined to create a clear liquid
You need to stir it more
Crystals form
