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WorksheetsElements,compound,mixture
Total questions: 21
Worksheet time: 10mins
Examples are diamonds (C) and Uranium (U)
elements
mixtures
compounds
Which example is a compound?
N2
O2
Cu
H2O2
Water (H2O) and Carbon dioxide (CO2) are examples of
elements
mixtures
compounds
none of These
Tungsten (W) and Uranium (U) are examples of
elements
mixtures
compounds
none of these
How many atoms are there in a molecule of CO2?
4
2
1
3
If a substance consists of more than one type of atom chemically combined, then it is
a compound
a molecule
an element
a mixture
Which one of the following statements about compounds is correct?
The properties of a compound are the same as the properties of the elements of which it is made up.
At least one of the elements in a mixture must be a gas.
It is possible to physically separate a compound into the elements that it is made from.
The elements in a compound are always present in the same ratio.
A compound is a substance that
is made up of only element.
contains only metallic elements chemically joined together.
contains two or more elements physically combined together in a fixed ratio.
is made up of two or more elements chemically joined together.
How do the properties of a compound compare with the properties of the elements that make up the compound?
Only the physical properties are the same.
Only the chemical properties are the same.
All the properties are identical.
The properties are different.
What kind of pure substance forms when two elements chemically combine?
Another element
A compound
A mixture
A solution
If a spoonful of salt is mixed in a glass of water, what is the end product called?
A solute
A solution
A solvent
An element
Mixtures are separated through ___________changes.
irreversible
permanent
physical
chemical
