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Junior Cert: Endothermic and Exothermic Reactions Flashcards | StudBud

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Junior Cert: Endothermic and Exothermic Reactions

12 terms·StudBud Administration·159 plays

A quick recap for the basics of Endothermic and Exothermic Reactions.

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Questions 12

Answers

1
Which of the following energy profile diagrams represents an exothermic reaction?
A
B
2
Which diagram represents the most exothermic reaction?
C
D
B
A
3
What is Collision Theory?
Molecules collide to cause energy
When cars crash into each other to make a pile-up
When molecules collide into each other and bounce away
Molecules that collide with right orientation to make bonds
4
Something that lowers the activation energy is known as a...
Transition metal
Product
Reactant
Catalyst
5
Which number is 'Activation Energy'?
2
3
1
4
6
Ice melting into liquid water is an endothermic reaction,
False
True
7
exothermic
is freezing
is really warm
releases heat into the enviroment
takes energy in
8
Activation Energy is......
energy needed to start chemical reaction
energy needed to live
energy needed for pretzelase
energy needed for substrates
9
A endothermic reaction...
process releases heat, causing the temperature of the surrounding to rise
process absorbs heat and cools the surroundings
10
Bond making is...
exothermic
exothermic OR endothermic
endothermic
11
Bond breaking is
Sometimes exothermic and sometimes endothermic
Always endothermic
Always exothermic
Neither endothermic nor exothermic
12
Which diagram represents the most endothermic reaction?
A
D
B
C