WorksheetsUnit 4 Review
Total questions: 23
Worksheet time: 11mins
This diagram represents...
An element
A molecule
A compound
A mixture of elements and compounds
What is a mixture?
elements chemically combined
a combination of different substances
composed of one atom only
it is made of chemical
It is a type of mixture that has the SAME COMPOSITION in every part.
Homogenous
Heterogeneous
Colored water is an example of a ________.
homogeneous mixture
heterogeneous mixture
The simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically
Atom
Compound
Molecule
A new substance with unique chemical and physical properties that is formed when two or more elements are chemically bonded during a chemical reaction
Product
Compound
Molecule
Atom
When a chemical reaction takes place,
New atoms are made
New molecules are made
Atoms move faster
Atoms can join together or break apart.
This picture shows a...
Solid compound
Solid element
Liquid compound
Solid mixture
This picture shows a...
Gaseous element
Liquid element
Gaseous compound
Liquid mixture
This is a...
Solid compound
Pure metal
molecule of an element
Mixture of elements
If four nitrogen molecules fit into a volume of gas, how many atoms are in that volume?
1
2
4
8
If I start with 3 atoms of Nitrogen, when they react with hydrogen to form NH3, how many TOTAL NITROGEN atoms will there be?
1
3
4
12
Which choice is the formula for calculating percent by mass?
a
b
c
d
I have a 10 g sample and 3 g of it is carbon. What is the mass percent of carbon?
3%
30%
33%
0.3%
What is the MASS RATIO of carbon if I have a 20 g sample and 10 g of it is carbon?
2
200
0.5
0.2
