Thermochemistry Science Form 3

Revision Chapter 5 Thermochemistry Science Form 3 KSSM

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26 questions

Aizam Satina

•almost 4 years ago

Question 1

Multiple Choice

10 points

The major change of energy during ____________ is from chemical energy to heat energy

endothermic reaction

exothermic reaction

Question 2

Multiple Choice

10 points

"The product is warmer than the reactants." The above statement is refer to _____________

A.endothermic reaction

B.exothermic reaction

Question 3

Multiple Choice

10 points

Which of the following is a correct examples for endothermic reactions.

cooking and freezing

rusting and condensation

evaporation and boiling

decomposition and commbustion

Question 4

Multiple Choice

10 points

The energy content in the reactants is higher during _________

endothermic reaction

exothermic reaction

Question 5

Multiple Choice

10 points

The similarity between endothermic reaction and exothermic reaction is ____

A.both does not release energy

B.both involve change of heat in substance

C.both make the temperature decrease

D.both will absorbs heat

Question 6

Multiple Choice

10 points

The type of reaction for the process of making food in plants is __________

A.endothermic reaction

B.exothermic reaction

Question 7

Multiple Choice

10 points

Choose the correct statement about endothermic reaction.

A.surrounding temperature increases

B.the total energy of reactants is lower than the products

C.release heat to surrounding

D.no energy changes

Question 8

Multiple Choice

10 points

Oxygen + glucose --> carbon dioxide + energy + water State the type of reaction for above equation.

A.exothermic reaction

B.endothermic reaction

Question 9

Multiple Choice

10 points

Which of the following are the characteristics of an exothermic reaction?

A.absorbs heat

B.surrounding temperature decreases

C.surrounding temperature increase

D.total energy of the reactants is lower than the products

Question 10

Multiple Choice

10 points

Which of the following processes is an endothermic reaction?

A.cell respiration

B.combustion

C.photosynthesis

D.decomposition

Question 11

Short Answer

20 points

Rusting of iron nail is example of what type of reaction?

Question 12

Short Answer

20 points

bake a cake is example of what type of reaction?

Question 13

Multiple Response

20 points

What happen when sodium hydroxide is dissolved in water?

A.the polystyrene cup becomes hot

B.heat is absorbed from the surroundings

C.an endothermic reaction occurs

D.reading of the thermometer increases

Question 14

Multiple Response

20 points

50 ml of sulphuric acid is mixed with 50 ml of potassium hydroxide into a polystyrene cup. Which of the following are related to the activity?

A.The polystyrene cup becomes hot

B.heat is released

C.Reading of the thermometer decreases

D.An endothermic reaction occurs

Question 15

Multiple Choice

20 points

Which of the following involves heat being absorbed?

A.burning a candle

B.pouring a concentrated acid into water

C.adding solid sodium hydroxide to water

D.Decomposition of calcium carbonate by heating

Question 16

Multiple Choice

20 points

What is a measuring device that is suitable to identify endothermic and exothermic reaction?

A.spring balance

B.potometer

C.Thermometer

D.Stopwatch

Question 17

Drag and Drop into Text

20 points

A chemical reaction that absorbs heat from surrounding is called an [[2]]

exothermic reaction

endothermic reaction

thermometer

product of reaction

Question 18

Drag and Drop into Text

20 points

A chemical reaction that releases heat to the surrounding is called an [[3]]

reactants

endothermic reaction

exothermic reaction

thermometer

Question 19

Drag and Drop into Text

20 points

If heat is absorbed, the mixture of reaction will become [[1]]

cold

hot

product of reactions

thermometer

Question 20

Drag and Drop into Text

20 points

If heat is released, the mixture of the reaction will become [[2]]

cold

hot

reactants

endothermic reaction

Question 21

Drag and Drop into Text

20 points

when a reaction happen, heat may be [[3]] or absorbed.

hot

endothermic reaction

released

thermometer

Question 22

Multiple Response

20 points

Which of the following is an exothermic reaction ?

A.boiling of water

B.rusting of an iron gate

C.condensation of water

D.photosynthesis

Question 23

Multiple Choice

20 points

what is meant by thermochemistry?

A.the study of heat change in a physical reaction

B.the study of heat change in a chemical reaction

C.the chemical reaction that involves the release of heat to the surrounding

D.the chemical reaction that involves the absorption of heat from surrounding

Question 24

Drag and Drop into Text

20 points

A chemical reaction is a process that involves reactions between the reactants to form [[2]]

absorbed

product of the reaction

released

exothermic reactiob

Question 25

Multiple Choice

20 points

Melvin dissolves a spoonful of sodium hydroxide at the temperature of 24 degree celcius. Predict the final temperature of the solution after all sodium hydroxide powder has dissolved

A.16

B.20

C.24

D.30

Question 26

Multiple Choice

20 points

Which of the following is an endothermic reaction?

A.Neutralisation reaction

B.Thermite reaction

C.Reaction between metals and acids

D.Decomposition reaction of metal carbonate