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WorksheetsEndo and Exo
Total questions: 16
Worksheet time: 22mins
Name
Class
Date
1.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
2.
In an endothermic reaction, heat is ,,,
a)
taken in
b)
given out
3.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
4.
what is an example of exothermic?
a)
firework
b)
ice pack
c)
coal
d)
wood
5.
How many protons does Helium have?
a)
4
b)
4.0026
c)
2
d)
1
6.
What two molecules are located inside of the nucleus of an atom?
a)
Electrons and Neutrons
b)
Protons and Electrons
c)
Protons and Neutrons
7.
How many electrons does Xenon have?
a)
131.20
b)
27
c)
54
d)
10
8.
Ist the following an endothermic or an exothermic process?
E + BaS --> Ba2+ + S2-
E + BaS --> Ba2+ + S2-
a)
Endothermic
b)
Exothermic
9.
A certain chemical reaction requires 286 kJ of energy to react and produces 300 kJ of energy. What is ΔH and is the reaction endothermic or exothermic?
a)
14 kJ/kg
Endothermic
Endothermic
b)
14 kJ/kg Exothermic
c)
-14 kJ/kg Endothermic
d)
-14 kJ/kg Exothermic
10.
As someone is running on the track they begin to perspire. If the runner is our system, are they endothermic or exothermic?
a)
Endothermic process
b)
Exothermic process
11.
Do reactants in an endothermic reaction have a higher or lower energy than the products?
a)
Higher
b)
Lower
12.
During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______.
a)
Warm
b)
Cold
13.
H2 + Cl2 --> 2 HCl + 1845 kJ
Is this reaction endothermic or exothermic?
Is this reaction endothermic or exothermic?
a)
Endothermic
b)
Exothermic
14.
H2 + 2 C + N2 + 270.3 kJ --> 2 HCN
Is this reaction endothermic or exothermic?
Is this reaction endothermic or exothermic?
a)
Endothermic
b)
Exothermic
15.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
16.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
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