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WorksheetsChem Reactions Vocab
Total questions: 14
Worksheet time: 14mins
Name
Class
Date
1.
Chemical reactions that absorb energy are known as ________________________.
a)
Endothermic
b)
Exothermic
c)
Boring
d)
Reactions
2.
In the equation,
2Mg + O2 ---> 2MgO,
which are the reactants?
2Mg + O2 ---> 2MgO,
which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
3.
CH4 + 2O2 ---> CO2 + 2H2O
In the above chemical reaction, what is the coefficient?
In the above chemical reaction, what is the coefficient?
a)
The small 2 in CO2
b)
The big 2 in 2O2
4.
___________________ are the elements or compounds that are formed or produced in a chemical reaction.
a)
Polymers
b)
Bonds
c)
Reactants
d)
Products
5.
_is a way to describe a chemical reaction using chemical formulas and symbols
a)
A chemical equation
b)
Molecule
c)
Chemical bond
d)
A chemical law
6.
A _______________ is a substance that helps speed up a chemical reaction but is not used in the reaction.
a)
Metal
b)
Coefficient
c)
Helper Ion
d)
Catalyst
7.
Exothermic reactions...
a)
Absorb energy
b)
Release energy
c)
Release Color
d)
Absorb Color
8.
When a substance is dissolved in water, that compound is said to be ___________.
a)
Aqueous
b)
Solution
c)
Non-polar
d)
Liquid
9.
Which of the following examples shows a single displacement reaction?
a)
A + BC ----> B + AC
b)
A + B ----> AB
c)
AB + CD ---> AD + CB
d)
AB ----> A + B
10.
Which of the following shows a synthesis reaction?
a)
A + BC ----> B + AC
b)
A + B ----> AB
c)
AB + CD ---> AD + CB
d)
AB ----> A + B
11.
What is a chemical reaction?
a)
When 2 or more substances mix creating a new substance
b)
when there is a reaction
c)
when there is something new
d)
a chemical bond
12.
Which of the following shows a double displacement reaction?
a)
A + BC ----> B + AC
b)
A + B ----> AB
c)
AB + CD ---> AD + CB
d)
AB ----> A + B
13.
Which of the following shows a decomposition reaction?
a)
A + BC ----> B + AC
b)
A + B ----> AB
c)
AB + CD ---> AD + CB
d)
AB ----> A + B
14.
What is a combustion reaction?
a)
the reaction of heat and metal to form metal liquid
b)
The reaction of carbon with oxygen gas to form carbon dioxide and water
c)
The reaction of a Group 1 metal with water
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