6092 Chapter 16 Energy Changes Quiz 1
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Chemistry
9th - 12th Grade
Used 3+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which process is endothermic?
condensation
freezing
neutralisation
photosynthesis
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which change has a positive enthalpy?
bond formation
combustion
melting of ice
respiration
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
C + 2O --> CO2
H2 --> 2H
Mg + CuSO4 --> Cu + MgSO4
NH3 + HCl --> NH4Cl
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The dissolving of potassium iodide in water is an endothermic process. Which graph shows the temperature changes that occur when potassium iodide is stirred with water until no further change in temperature is observed?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When sodium hydroxide is added to nitric acid, a temperature change is observed.
Which graph shows the change in temperature when aqueous sodium hydroxide is added to a fixed volume of nitric acid until the alkali is in excess?
6.
FILL IN THE BLANKS QUESTION
5 mins • 1 pt
2877 kJ of heat (energy) is produced when 1 mole of butane (C4H10) gas is burnt.
What is the amount of energy evolved when 87 g of butane is combusted? Molar mass of butane is 58 g/mol.
(a)
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