WorksheetsChemistry Quiz
Total questions: 35
Worksheet time: 46mins
Name
Class
Date
1.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
2.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
3.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
4.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
5.
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
6.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction.
7.
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
8.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
9.
What is the little number after an element in a chemical equation called.
Example: H2
Example: H2
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
10.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
11.
What is the number before a chemical formula called?
Ex: 2H2 + O2 --> 2H2O
Ex: 2H2 + O2 --> 2H2O
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
12.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
13.
Is the following equation balanced?
4Fe + 3O2 --> 2Fe2O3
4Fe + 3O2 --> 2Fe2O3
a)
yes
b)
no
14.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
15.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
16.
The blue numbers in the image below represent ________
a)
Charges
b)
coefficients
c)
subscripts
d)
none of the answers are correct
17.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
6
c)
8
d)
24
18.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
19.
Which side of a chemical equation is the product side?
a)
Left (before the yields sign)
b)
Right (after the yields sign)
20.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
21.
What is the right part of a chemical equation called...
H2 + O2 --> H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
22.
What is the arrow in a chemical equation...
H2 + O2 --> H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
23.
Balance this equation...
H2 + Cl2 --> HCl
H2 + Cl2 --> HCl
a)
It is balanced
b)
3H2 + Cl2 --> 6H2Cl
c)
H2 + Cl2 --> 2HCl
d)
I don't know! Oh well.
24.
In this image, the information in red is called the_______.
a)
Products
b)
Reactants
c)
Chemical Subscript
d)
Ingredients
25.
In this image, the information to the right of the arrow (in black) is called the_______.
a)
Product
b)
Reactant
c)
Chemical Subscript
d)
Final chemical
26.
What is the arrow in a chemical equation say to us as chemists...
H2 + O --> H2O
H2 + O --> H2O
a)
Reactants
b)
Products
c)
"Makes" or "Yields"
d)
Chemical Equation
27.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction.
28.
How many ELEMENTS are in the compound H2O
a)
1
b)
2
c)
3
d)
4
29.
How many ATOMS of Carbon are in 3C2H4O
a)
2
b)
3
c)
4
d)
6
30.
How many ATOMS of Oxygen are in 3Fe2O3
a)
2
b)
3
c)
6
d)
9
31.
How many TOTAL atoms are in 2H2SO4
a)
2
b)
4
c)
7
d)
14
32.
How many TOTAL atoms are in 2H2SO4
a)
2
b)
4
c)
7
d)
14
33.
How many TOTAL atoms are in 2CaO2
a)
2
b)
3
c)
5
d)
6
34.
Is the following equation balanced or unbalanced ?
Al + O2 --> Al2O3
Al + O2 --> Al2O3
a)
Balanced
b)
Unbalanced
35.
How many atoms of lead (Pb) are in Pb(NO₃)₂?
a)
1
b)
2
c)
3
d)
6
100 %
