WorksheetsCh.4 Elements, Mixtures and Compounds
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
A pure substance that cannot be separated into simpler substances by physical or chemical means.
a)
metal
b)
element
c)
metalloid
d)
pure substance
2.
A sample of matter, either an element or a compound, that has definite chemical and physical properties.
a)
element
b)
molecule
c)
pure substance
d)
metal
3.
An element that conducts heat and electricity poorly and can be dull.
a)
metal
b)
nonmetal
c)
metalloid
4.
An element that has properties of both metals and nonmetals.
a)
metal
b)
nonmetal
c)
metalloid
5.
An element that conducts heat and electricity well, is shiny, malleable and ductile.
a)
metal
b)
nonmetal
c)
metalloid
6.
Which type of mixture is gelatin an example of ?
a)
colloid
b)
solution
c)
element
d)
compound
7.
An example of an element would be...
a)
gelatin
b)
nugget of gold
c)
water
d)
salt dissolved in water
8.
Water is an example of....
a)
colloid
b)
solution
c)
element
d)
compound
9.
Salt dissolved in water is an example of a.....
a)
colloid
b)
solution
c)
element
d)
compound
10.
In a solution of salt and water, where the salt completely dissolves, what part of the solution is the salt?
a)
solute
b)
solution
c)
solvent
d)
element
11.
How can a compound be broken down?
a)
through physical changes
b)
through chemical changes
c)
by crushing the compound
d)
by cooling the compound
12.
Why can salt dissolve into water?
a)
salt is the solvent
b)
salt is a solution
c)
salt is soluble
d)
salt is an element
13.
What can you do to speed up the rate at which a sugar cube dissolves?
a)
cool the water
b)
crush the sugar cube
c)
let the cube sit in the water
d)
add more water
14.
When elements form mixtures, the elements
a)
keep their original properties
b)
react to form a new substance with new properties
c)
combine in a specific mass ratio
d)
always change their physical properties
15.
How is a compound different from a mixture?
a)
compounds have 2 or more components
b)
each substance in a compound loses its characteristic properties and new properties form
c)
compounds are commonly found in nature
d)
solids, liquids and gases can form compounds
16.
The flammability of a substance is
a)
a chemical property
b)
related to the density
c)
a physical property
d)
changeable
17.
What is formed when particles of one substance dissolve into another substance?
a)
compound
b)
suspension
c)
solution
d)
element
18.
What is a solid solution of a metal or nonmetal dissolved in a metal?
a)
suspension
b)
alloy
c)
colloid
d)
compound
19.
If a spoonful of salt is mixed in a glass of water forming a solution, what is the water called?
a)
solute
b)
solution
c)
solvent
d)
soluble
20.
What is a pure substance made of two or more elements that are chemically combined?
a)
element
b)
compound
c)
mixture
d)
solution
21.
How do elements join to form compounds?
a)
randomly
b)
in a specific mass ratio
c)
in whatever ratio works
d)
however the scientists plans it
22.
The physical properties of compounds do NOT include
a)
melting point
b)
density
c)
reactivity with acid
d)
color
23.
When two or more elements join together chemically,
a)
a compound is formed
b)
a mixture is formed
c)
a substance that is the same as the elements is formed
d)
the physical properties of the substances remain the same
24.
An element's ability to react with acid is an example of a
a)
pure substance
b)
physical property
c)
chemcial property
d)
melting point
25.
A property of an element that does not depend on the amount of the element is called a
a)
electromagnetic property
b)
science property
c)
unique property
d)
characteristic property
26.
Boiling point, melting point, and density are some of an element's
a)
nonreactive properties
b)
physical properties
c)
chemical properties
d)
pure properties
100 %
