NEW
Font size
S
M
L
XL
WorksheetsChemical reaction quiz
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
The force that holds 2 atoms together is called a ________________.
a)
Chemical Reaction
b)
Chemical Bond
c)
Diatomic Chemical
d)
Glue
2.
A molecule made of 2 atoms is called a ____________________.
a)
Diatomic Molecule
b)
Chemical Bond
c)
Product
d)
Reactant
3.
How many atoms of Carbon are in one molecule of table sugar (C12H22O11) ?
a)
12
b)
22
c)
11
d)
1
4.
What are the reactants in the chemical equation pictured?
a)
CH4 and CO2
b)
CH4 and O2
c)
CO2 and H2O
d)
O2 and H2O
5.
What is the large number written before a chemical formula called?
a)
Coefficient
b)
Subscript
c)
Reactant
d)
Product
6.
What is the small number written after a chemical symbol called?
a)
Coefficient
b)
Subscript
c)
Product
d)
Reactant
7.
According to the law of conservation of mass...
a)
sometimes atoms are lost
b)
sometimes atoms are gained
c)
atoms are never lost nor gained
d)
atoms are lost and gained
8.
In an exothermic reaction energy is ...
a)
released
b)
absorbed
c)
protons
d)
electrons
9.
In an endothermic reaction energy is...
a)
released
b)
absorbed
c)
protons
d)
neutrons
10.
What type of change took place when a copper penny turned green after a few years?
a)
Physical change
b)
Chemical change
Reset
