Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Chemistry Ch 15 - Heat Of Reactions
Test Description: System, enthalpy and enthalpy of reaction
Instructions: Answer all questions to get your test result.
1) which expression is correct?
A
system = universe + surroundings
B
universe = system + surroundings
C
universe = system - surroundings
D
surroundings = universe + system
2) When a reaction produces heat, the heat flows
A
from the system to the surroundings
B
from the surroundings to the system
C
from the system to the universe
D
from the universe to the system
3) The content of heat of a system is
A
enthalpy
B
enthalpy of reaction
C
thermal energy
D
kinetic energy
4) Which reaction is exothermic?
A
CO₂ (g) + H₂O (g) + 18.72 kJ -- H₂CO₃ (g)
B
4Fe(s) + 3O₂(g) -- 2Fe₂O₃(s) ΔHrxn = -1625 kJ
C
NH₄NO₃(s) -- NH₄⁺(aq) +NO₃⁻(aq) ΔHrxn = +27 kJ
D
H₂O₂(l) → H₂O(l) + 1/2 O₂(g) + 0 kJ
5) what is the enthalpy (heat) of the reaction 2C₂H₂(g) + 5O₂(g) ⟶ 4CO₂(g) + 2H₂O(g) +2511.6 kJ ?
A
-2511.6 kJ
B
0 kJ
C
+2511.6 kJ
D
2511.6 kJ
6) If the H(reactants) = 340 J and H(products) = 200 J, what is the enthalpy (heat) of the reaction?
A
140 J
B
340 J
C
200 J
D
-140 J
7) Which reaction happens in an ice pack?
A
exothermic
B
enthalpy
C
endothermic
D
double replacement
8) After an exothermic reaction
A
the products have more enthalpy than the reactants
B
the products and reactants have the same enthalpy
C
the products gained heat energy from the surroundings
D
the reactants have more enthalpy than the products
9) If the H(reactants) = 340 J and H(products) = 200 J, what is the enthalpy (heat) of the reaction?
A
140 J
B
200 J
C
340 J
D
-140 J
10) When a reaction produces heat, the heat flows
A
from the universe to the system
B
from the surroundings to the system
C
from the system to the surroundings
D
from the system to the universe
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?