Review 1.A.5 Question Preview (ID: 45000)


9-12.PS1.A.5 Develop A Model To Illustrate That The Release Or Absorption Of Energy From A Chemical Reaction System Depends Upon The Changes In Total Bond Energy. TEACHERS: click here for quick copy question ID numbers.

Products have lower chemical energy than the reactants
a) exothermic
b) endothermic
c) isothermic
d)

A reaction that gives off energy
a) exothermic
b) endothermic
c) isothermic
d)

A reaction that absorbs energy
a) exothermic
b) endothermic
c) isothermic
d)

Products have a higher chemical energy
a) endothermic
b) exothermic
c) isothermic
d)

Which of the following is exothermic
a) freezing
b) melting
c)
d)

Energy is _______ when bonds break
a) absorbed
b) released
c)
d)

Energy is _______ when bonds are formed
a) absorbed
b) released
c)
d)

A student mixes baking soda and vinegar in a cup. They notice the cup feels cold to the touch. This reaction is _____
a) exothermic
b) endothermic
c)
d)

A student burns a strip on magnesium. The magnesium gives of a bright flame and heat. This reaction is ______.
a) exothermic
b) endothermic
c)
d)

When reactants have higher chemical energy than products the reaction is ______
a) exothermic
b) endothermic
c) isothermic
d)

Exothermic reaction containers will feel
a) cold
b) hot
c) impossible to tell
d)

Endothermic reaction containers will feel
a) cold
b) hot
c) impossible to tell
d)

Breaking bonds is ______
a) exothermic
b) endothermic
c) isothermic
d)

Making bonds is __________
a) exothermic
b) endothermic
c) isothermic
d)

If products have lower chemical energy than the reactants, the container will feel ____.
a) cold
b) hot
c) impossible to tell
d)

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