Endothermic Exothermic Cornell Presentation

Labelling

Label the graph with reactants and products.

Drag labels to their correct position on the image

Reactant

Product

Labelling

Label the reactant and product

Drag labels to their correct position on the image

product

reactant

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Multiple Choice

What is the primary reason that endothermic reactions require an input of energy?

• To break bonds in the reactants

• To form new bonds in the products

• To increase the reaction rate

• To decrease the reaction rate

Multiple Choice

In a laboratory experiment, a student observes that a vinegar-baking soda mixture becomes colder over time. What type of reaction is likely occurring, and what evidence supports this conclusion?

• Exothermic; the reaction releases heat.

• Endothermic; the reaction absorbs heat.

• Exothermic; the reaction absorbs light.

• Endothermic; the reaction releases gas.

Open Ended

As ice melts, energy is absorbed to break bonds and form water. Is this an example of an endothermic or exothermic reaction?

Multiple Choice

According to the potential energy diagram shown above, the chemical reaction in the forward direction (going towards C) is

• exothermic because it absorbs energy

• exothermic because it releases energy

• endothermic because it absorbs energy

• endothermic because it releases energy

Dropdown

This reaction can best be described as ​

Select answer

because the temperature of the substances likely ​

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due to the release of energy depicted in the graph.​

Multiple Choice

Which statement best describes the energy flow in an exothermic reaction?

• Energy is absorbed from the surroundings

• Energy is released into the surroundings

• Energy within the system remains constant

• Energy is neither absorbed nor released

Categorize

Options (8)

Heat is absorbed

Heat is released

Temperature of the surroundings decreases

Temperature of the surroundings increases

Bonds are formed

Bonds are broken

Heat is a reactant

Heat is a product

Organize characteristics as either endothermic or exothermic

Endothermic

Exothermic

Poll

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