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WorksheetsChemistry Unit 2 Review
Total questions: 35
Worksheet time: 24mins
The atom is the building block of matter.
true
false
A compound is
anything that takes up space
a substance made up of atoms of only one kind
two or more different elements in exact proportion
An element is
anything that takes up space
a substance made up of atoms of only one kind
two or more different elements in exact proportion
This is an example of a _______ change. (melting chocolate)
physical
chemical
This is an example of a ________ change. (baking cookies)
physical
chemical
This is an example of a _________ change.
physical
chemical
A chemical change does not have to do with phase changes (States of Matter Changes).
true
false
A new substance is formed in a physical change.
true
false
Which of the following are examples of chemical properties (more than one)
combusts
reacts with water and oxygen
ductile
is weighed in grams
flammability
Cutting your hair is an example of a ___________ change.
physical
chemical
Which below are types of physical properties: (more than one)
density
color change
flammability
mallelable
solubility
Select ALL of the characteristics of a physical change
changes in appearance only
a new substance is not created
changes in the ph level
burning and fire
chemical bonds are not created or broken
A chemical change is when
the chemical properties change
the chemical properties do not change
a change where the characteristics do not change the substance
A physical change is
a change where the characteristics do not change the substance
a change where the characteristics do change the substance
a change where the chemistry changes
A heterogeneous mixture is
a mixture in which individual substances are not evenly mixed
a mixture in which multiple substances are mixed
a mixture in which the individual substances are evenly mixed
A homogeneous mixture is
a mixture in which individual substances are not evenly mixed
a mixture in which multiple substances are mixed
a mixture in which the individual substances are evenly mixed
Mrs. Roth's teacup and hot tea weigh 100 grams. She stirs in 10 grams of sugar. How much is the total amount of matter in Mrs. Roth's tea cup and tea now?
100 grams
110 grams
90 grams
2Fe2O3 + 3C --> 4Fe + 3 CO2
Chemical changes create new substances with different compositions and Physical changes keep their same composition.
True
False
If an acid reacts with a substance the result is a
Chemical Property
Chemical Change
Physical Property
Physical Change
Alka Seltzers are white tablets that will bubble and fizz (react) when placed in water. Which of these shows a chemical and physical property of the alka seltzer?
The alka seltzer is white and is easily broken
The alka seltzer is white and the water is clear
The alka seltzer is a solid and the water is a liquid
The alka seltzer is a white tablet and will bubble and fizz when placed in water.
Wood burning turns to smoke, ash and gas. This is an example of
matter being created and being destroyed
matter being created but not destroyed
matter being transformed from one substance into another
matter being destroyed but not created.
