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WorksheetsTypes of material systems
Total questions: 30
Worksheet time: 22mins
What type of material system is tap water?
pure substance
colloid
homogeneous mixture
heterogeneous mixture
Only one of the following substances is a pure substance. Which one?
distilled water
mineral water
tap water
What type of material system is an alloy, for instance, bronze?
pure substance
homogeneous mixture
heterogeneous mixture
Is a golden ingot a pure substance?
Yes, it is.
No, it isn't
bronze, steel and stainless steel have something in common...
They have nothing in common.
All of them are homogeneous mixtures
Are ammonia and household ammonia the same substance?
Yes. But in supermarkets ammonia is sold under the name of household ammonia.
No. They aren't. Ammonia is a pure substance and household ammonia is ammonia dissolved in water; so it is a homogeneous mixture.
A bracelet is made of 18-karat gold. What does it mean?
That bracelet is not made of pure gold but gold and copper. So it is a homogeneous mixture.
It means the bracelet weighs 18 g.
Olive oil is a natural substance, but is it also a pure substance?
No, it isn't. It contains a lot of substances such as oleic acid. It is a homogeneous mixture.
Yes, of course! It is a pure substance. It can be obtained from olives.
What type of substance is bleach? Hint: It is a substance ( NaClO) dissolved in water.
a pure substance
a homogeneous mixture
What type of substance is vinegar? Hint: It is a substance (acetic acid) dissolved in water.
It is a pure substance.
It is a homogenous mixture.
The picture shows sulphur and iron filings. We can distinguish both substances. So we say it is...
a homogenous mixture.
a heterogeneous mixture
What type of substance is smoke?
a pure substance
a homogenous mixture
a type of colloid called aerosol
a heterogenous mixture
Hairspray is sold in cans as the picture shows. What type of substance is it?
A pure substance
A type of colloid called aerosol
A homogenous mixture.
There are four types of colloids: aerosols, emulsions, foams and...
compounds
gels
simple substance
The picture shows something men use. What type of substance is it?
A type of colloid called foam
A compound
A homogeneous mixture
A type of colloid called gel
Which substance is not foam (a type of colloid)?
Only one of the following substances is a type of colloid called "emulsion".Which one?
Colloids are mixtures of substances in which one of them is divided in tiny particles that can be seen by using a microscope.
That is true.
That is false.
A substance can be represented by a formula; for instance H2O . Then, it is a...
homogenous mixture
heterogeneous mixture
a compound (a kind of pure substance)
A substance is made up of atoms of one element; for instance ozone is made up of atoms of oxygen (only oxygen). Then, ozone is a...
a simple substance (a kind of pure substance)
a compound (a kind of pure substance)
a homogenous mixture
a heterogeneous mixture
What type of material system is one that is made of a substance present in the Periodic Table?
Homogeous mixture
Colloid
Heterogeneous mixture
Simple substance
Compound
The Tyndall effect can only be observed in a type of material system called (a)
What have diamond and graphite in common?
Both are compounds.
Both are good electrical conductors.
Both are made of carbon.
Is pencil lead made of graphite?
Yes. It is.
No. It is a homogeneous mixture.
What is a 24-karat gold ring made of?
It is made of gold and copper.
It is made of gold; nothing else.
What have all types of vinegars in common?
They all contain acetic acid and water.
They all are produced from wine.
What type of material system is wine?
Pure substance. It is produced from grapes.
Homogenoeus mixture.
What type of material system is bleach?
Pure. It is used for cleaning.
Homogeneous mixture.
What type of material system is the inner part of one euro coins?
Simple substance: nickel
Homogenoeus mixture: nickel and copper.
Heterogeneous mixture
Can we find a 25 karat-gold bracelet?
Yes, of course!
No. We can’t.
