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WorksheetsBellwork 4 6th Six Weeks
Total questions: 15
Worksheet time: 20mins
Name
Class
Date
1.
Energy in endothermic reactions are
a)
released
b)
ended
c)
absorbed
d)
cultivated
2.
Exothermic reactions feel
a)
warm
b)
cold
c)
like summer in the middle of August, just right
d)
Imagine being a polar bear at the top of a glacier, just like that
3.
Endothermic reactions feel
a)
warm
b)
cold
c)
peachy
d)
elusive
4.
Heat flows from _______ to ______ objects
a)
cooler to warmer
b)
warmer to warmer
c)
warmer to cooler
d)
cooler to cooler
5.
Heat is measured in
a)
joules
b)
grams
c)
degrees celcius
d)
J/goC
6.
Q stands for which variable
a)
heat
b)
mass
c)
specific heat
d)
change in temperature
7.
The variable C stands for what
a)
heat
b)
mass
c)
specific heat
d)
change in temperature
8.
For the formula:
Q= m c ∆T
The units for specific heat are:
Q= m c ∆T
The units for specific heat are:
a)
g /J C
b)
°C/g J
c)
kJ/g
d)
J/g°C
9.
Using the heat equation, what would the formula look like if we were solving for change in temperature?
a)
Q m=∆T c
b)
Q/mc= ∆T
c)
Qm/c=∆T
d)
mcQ=∆T
10.
Which solute does not increase in solubility as temperature rises?
a)
NH3
b)
NaNO3
c)
KNO3
d)
NaCl
11.
How many grams of SO2 can dissolve at 50 ⁰C?
a)
5 g
b)
10 g
c)
20 g
d)
39 g
12.
How many more grams of KNO3 dissolve at 50 ⁰C compared to 0 ⁰C?
a)
85 g
b)
15 g
c)
70 g
d)
100 g
13.
CaCO3
a)
soluble
b)
insoluble
14.
KBr
a)
Soluble
b)
Insoluble
15.
Zn(OH)2
a)
Soluble
b)
Insoluble
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