WorksheetsEndothermic and Exothermic Processes
Total questions: 15
Worksheet time: 15mins
Equal amounts of four different substances (A-D) where added separately to equal amounts of an acid and a thermometer placed in the mixture. For which substance is the reaction the least endothermic?
temperature falls by 3 °C
temperature rises by 5 °C
temperature falls by 5 °C
temperature rises by 3 °C
In an endothermic reaction, energy is _________.
absorbed
released
____ reactions usually feel cold.
endothermic
exothermic
_____ reactions usually feel hot!
endothermic
exothermic
Ice cubes in your glass of soda melt.
endothermic
exothermic
Which of the following examples is an endothermic reaction?
Potassium Chloride dissolves in water the temperature drops.
Acid mixed with Sodium Carbonate the temperature drops.
What is an example of endothermic process?
Chemical Ice Pack
Boiling Water
Bonfire
What is TWO ways to know an Endothermic Reaction has occurred?
Temperature Drops
Something is dissolved
Temperature Rises
Combustion
Solid --> liquid --> gas is what type of reaction?
endothermic
exothermic
catalytic
inhibited
gas --> liquid --> solid is what type of reaction?
endothermic
exothermic
catalytic
inhibited
Baking pizza in the oven
endothermic
exothermic
Your family uses candles to see when the electricity goes out.
exothermic
endothermic
Which of the following processes is an example of an endothermic reaction?
A) Melting of ice
B) Combustion of gasoline
C) Freezing of water
D) Condensation of steam
In an exothermic reaction, what happens to the energy?
A) It is absorbed from the surroundings
B) It is released to the surroundings
C) It remains constant
D) It is converted into mass
A student mixes two chemicals in a beaker and observes that the temperature of the mixture decreases. What type of process is occurring?
A) Exothermic
B) Endothermic
C) Isothermal
D) Adiabatic
