WorksheetsPre/Post
Total questions: 10
Worksheet time: 44mins
Name
Class
Date
1.
In any chemical or physical process, energy is neirther created nor destroyed
a)
Law of Conservation of Energy
b)
Law of Attraction
c)
Law of Thermodynamics
d)
Boyle's Law
e)
Ideal Gas Law
2.
A process that absorbs heat is a(n)
(a)
3.
Find the specific heat of a substance if 6,789 cal are required to raise Temp of a 250g of a substance by 25 ℃.
a)
0.356 cal/g℃
b)
1.91 cal/g℃
c)
58 cal/g℃
d)
1.09 cal/g℃
e)
1.09 cal
4.
Which of the following is not a unit used in q=mCΔT?
a)
J or cal
b)
J/g℃
c)
g/mL
d)
℃
e)
s
5.
Does the graph of the reaction show an endothermic or exothermic progress?
a)
Endothermic
b)
Exothermic
6.
From 1 - 5, which number represents the Δhvap?
a)
1
b)
2
c)
3
d)
4
e)
5
7.
If the temperature stays at 215.8K but the pressure increases from 101.4kPa to 6701.7kPa, what phase is it in?
(a)
8.
Find the ΔH or reaction. Remember to add the unit
a)
131.3 kJ
b)
1208.3 kJ
c)
15.333 kj
d)
2 kJ
9.
If a reaction has a ΔS = -88 J/K and ΔH = -300.15 kJ, what is the Gibbs free energy at 70℃? Is this Spontaneous or Non Spontaneous?
4 lines
10.
What does is mean for a reaction to be Spontaneous? Provide an example
4 lines
100 %
