#9 Endothermic and Exothermic Processes

Directions: Watch the following review video to refresh your memory on both systems and endothermic/exothermic processes. 

For the following questions choose whether or not the desription goes with endothermic reactions (A) or exothermic reactions (B).

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More energy is released by products than is needed to break bonds.

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It literally means "taking in heat."

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Reactions feel hot to us.

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An example is baking soda and vinegar.

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Reaction feels cold.

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Wood burning is an example.

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Products have more energy than the reactants.

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Heat is absorbed.

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This equation: Reactants→Products+Energy

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Sodium metal is dropped into water, and creates an explosive reaction. The reaction creates a lot of heat and flame.
Identify if this reaction is an endothermic or exothermic process.

1

When bread is baked, heat is required for the dough to rise and cook.
Identify whether baking bread is an endothermic or exothermic process.

1

Gaseous water becomes liquid in the air and forms a cloud.
Identify whether the system of the air is endothermic or exothermic?

1

Potassium chloride is dissolved in water in a conical flask. The reaction makes the glass feel cold.
Identify if this reaction is an endothermic or exothermic process.

1

Water is warmed up to its boiling point, where it starts to create gaseous water vapour.
Identify whether this state change is an endothermic or exothermic process.

#9 Endothermic and Exothermic Processes

More energy is released by products than is needed to break bonds.

It literally means "taking in heat."

Reactions feel hot to us.

An example is baking soda and vinegar.

Reaction feels cold.

Wood burning is an example.

Products have more energy than the reactants.

Heat is absorbed.

This equation: Reactants→Products+Energy

Sodium metal is dropped into water, and creates an explosive reaction. The reaction creates a lot of heat and flame.Identify if this reaction is an endothermic or exothermic process.

When bread is baked, heat is required for the dough to rise and cook.Identify whether baking bread is an endothermic or exothermic process.

Gaseous water becomes liquid in the air and forms a cloud.Identify whether the system of the air is endothermic or exothermic?

Potassium chloride is dissolved in water in a conical flask. The reaction makes the glass feel cold.Identify if this reaction is an endothermic or exothermic process.

Water is warmed up to its boiling point, where it starts to create gaseous water vapour.Identify whether this state change is an endothermic or exothermic process.

More energy is released by products than is needed to break bonds.

It literally means "taking in heat."

Reactions feel hot to us.

An example is baking soda and vinegar.

Reaction feels cold.

Wood burning is an example.

Products have more energy than the reactants.

Heat is absorbed.

This equation: Reactants→Products+Energy

Sodium metal is dropped into water, and creates an explosive reaction. The reaction creates a lot of heat and flame.Identify if this reaction is an endothermic or exothermic process.

When bread is baked, heat is required for the dough to rise and cook.Identify whether baking bread is an endothermic or exothermic process.

Gaseous water becomes liquid in the air and forms a cloud.Identify whether the system of the air is endothermic or exothermic?

Potassium chloride is dissolved in water in a conical flask. The reaction makes the glass feel cold.Identify if this reaction is an endothermic or exothermic process.

Water is warmed up to its boiling point, where it starts to create gaseous water vapour.Identify whether this state change is an endothermic or exothermic process.

Sodium metal is dropped into water, and creates an explosive reaction. The reaction creates a lot of heat and flame.
Identify if this reaction is an endothermic or exothermic process.

When bread is baked, heat is required for the dough to rise and cook.
Identify whether baking bread is an endothermic or exothermic process.

Gaseous water becomes liquid in the air and forms a cloud.
Identify whether the system of the air is endothermic or exothermic?

Potassium chloride is dissolved in water in a conical flask. The reaction makes the glass feel cold.
Identify if this reaction is an endothermic or exothermic process.

Water is warmed up to its boiling point, where it starts to create gaseous water vapour.
Identify whether this state change is an endothermic or exothermic process.

Sodium metal is dropped into water, and creates an explosive reaction. The reaction creates a lot of heat and flame.
Identify if this reaction is an endothermic or exothermic process.

When bread is baked, heat is required for the dough to rise and cook.
Identify whether baking bread is an endothermic or exothermic process.

Gaseous water becomes liquid in the air and forms a cloud.
Identify whether the system of the air is endothermic or exothermic?

Potassium chloride is dissolved in water in a conical flask. The reaction makes the glass feel cold.
Identify if this reaction is an endothermic or exothermic process.

Water is warmed up to its boiling point, where it starts to create gaseous water vapour.
Identify whether this state change is an endothermic or exothermic process.