NEW
Font size
S
M
L
XL
WorksheetsVNGS - Matter and Chemical Formulae
Total questions: 45
Worksheet time: 2hrs 56mins
Name
Class
Date
1.
How many Oxygen atoms (O) are in a molecule of CO2
a)
1
b)
2
c)
3
d)
0
2.
How many oxygens atoms ( O )atoms in a molecule of H2O?
a)
1
b)
2
c)
3
d)
0
3.
The small number to the right of an elemental symbol ( H2) is called?
a)
a subscript
b)
a coefficient
c)
a variable
d)
a divisor
4.
More than two atoms stuck together is called a ...................
a)
element
b)
molecule
c)
Chemical property
d)
Physical property
5.
The smallest building block of matter is the......................
a)
compound
b)
molecule
c)
atom
d)
fluid
6.
There are over 100 different kinds of atoms these different atoms are known as ....................
a)
elements
b)
mixtures
c)
chemical bond
d)
chemistry
7.
When a molecule is made up of more than two different elements ( Example CO2) we call this .......................
a)
a mixture
b)
atom
c)
a compound
8.
A series of numbers and letters that are used to represent a molecule
a)
physical property
b)
chemical property
c)
chemical formula
d)
atom
9.
Something that takes up space and has mass.
a)
volume
b)
matter
c)
mass
d)
density
10.
Which example is a compound?
a)
N2
b)
O2
c)
Cu
d)
H2O2
11.
A combination of substances that are not chemically combined is called a(n)____________.
a)
mixture
b)
compound
c)
physical
12.
Mixtures are separated through ___________changes.
a)
mixture
b)
compound
c)
physical
13.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
14.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
15.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
16.
A molecule is smaller than an atom.
a)
True
b)
False
17.
How many Oxygen (O) atoms are in 2C2HO8Cl2
a)
2
b)
16
c)
8
d)
5
18.
How many molecules of Carbon are in the following formula? 3C2H6
a)
3
b)
6
c)
12
d)
18
19.
The picture is an example of what type of substance?
a)
A Mixture of Two Elements
b)
A Molecule
c)
An Element
d)
A Compound
20.
The picture featured is an example of what?
a)
A Mixture of a Compound and an Element
b)
A Mixture of Two Compounds
c)
A Compound
d)
A Mixture of Two Elements
21.
This image is an example of what?
a)
Compound
b)
A Mixture of Two Elements
c)
A Mixture of Two Compounds
d)
Element
22.
Which of the following is a difference between a mixture and a compound?
a)
A compound is chemically combined. A mixture is physically combined
b)
A compound creates a new substance with new properties. A mixture keeps its properties
c)
A mixture can be easily separated by a physical change. A compound requires a chemical change to be separated.
d)
All the points given here are correct.
23.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
24.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
25.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
26.
How many Mn atoms are found in the following compound?
3Cr(MnO4)6
3Cr(MnO4)6
a)
3
b)
4
c)
6
d)
18
27.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
28.
Name the following ionic compound: BeCl2
a)
beryllium chlorine
b)
beryllium II chloride
c)
beryllium chloride
d)
beryllium dichloride
29.
What is the correct formula for the compound, lithium oxide?
a)
LiO
b)
Li2O
c)
LiO2
d)
Li2O2
30.
The formula of calcium phosphate is
a)
CaPO4
b)
Ca2(PO4)3
c)
Ca3PO4
d)
Ca3(PO4)2
31.
What is the name of Al(NO3)3?
a)
Aluminum trinitrate
b)
Monoaluminum nitrate
c)
Aluminum (III) nitrate
d)
Aluminum Nitrate
32.
Name the following ionic compound: Cr(NO2)3
a)
chromium nitrite
b)
chromium nitride
c)
chromium III nitride
d)
chromium III nitrite
33.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
34.
What is the name of CO
a)
Carbon oxide
b)
Carbon dioxide
c)
Carbon monoxide
d)
Carbon II oxide
35.
Which is the correct atom count for the reactant side of the chemical equation?
CH4 + 2 O2 -> CO2 + 2 H2O
CH4 + 2 O2 -> CO2 + 2 H2O
a)
C=4
H=4
O=4
H=4
O=4
b)
C=1
H=4
O=2
H=4
O=2
c)
C=1
H=4
O=2
H=4
O=2
d)
C=1
H=4
O=4
H=4
O=4
36.
If an atom has 8 valence electrons, it is said to be
a)
Not reactive, not stable
b)
Reactive, Not stable
c)
Not reactive, Stable
37.
Valency of Boron is
a)
1
b)
3
c)
2
38.
What will be the valency of Bromine?
a)
1
b)
7
c)
8
39.
How many valence electrons are there in Nitrogen?
a)
7
b)
5
c)
6
40.
The atomicity of Oxygen molecule is
a)
1
b)
0
c)
2
d)
3
41.
Which part of an atom is POSITIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
42.
What part of an atom is NEGATIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
43.
Which part of an atom has no charge?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
44.
Outer shell electrons are called
a)
outer electrons
b)
valence electrons
c)
negatives
45.
What charge does a potassium (K) ion have?
a)
+1
b)
-1
c)
+2
d)
-2
Reset
