Chemical Energy

Match the following

• The amount of energy needed to get a reaction to start

• Endothermic

• The reaction releases energy to the surroundings

• Catalyst

• The reaction absorbs energy from the surroundings

• Activation Energy

• Increases the rate of a reaction by reducing the required activation energy

• Exothermic

Label the reaction profile

c

b

a

Products

Reactants

Activation Energy

Tap the activation energy

Tap the reactants

Tap the overall energy change

Match the following

• Temperature Increases

• 
• Exothermic Reaction Profile

• Catalysts

• Endothermic Reaction Profile

• Endothermic

• Increase the rate of reaction

• Exothermic

• Temperature Decreases

• 

In a ​ (a)   reaction the bonds in the ​ (b)   are broken and in the ​ (c)   are made. Different amounts of ​ (d)   are stored in these bonds. This gives and overall energy ​ (e)   .

• chemical
• reactants
• products
• energy
• change

Endothermic reactions ​ (a)   energy from the surroundings. This ​ (b)   the temperature of the surroundings. Exothermic reactions ​ (c)   energy to the surroundings, ​this ​ (d)   the temperature.

• absorb
• lowers
• release
• increases