Topics;
Introduction to Heats
Basic Questions about Energy and Reactions
a) Types of Reactions
b) Why do chemical reactions occur?

Basic Questions about reactions and energy

Most of the energy we use today still comes from a chemical source. Since the production and use of energy is so important, we need to perform a careful study of energy changes associated with chemical reactions. Let's start by considering some basic questions.

1) What types of reactions occur in terms of energy?
2) Why causes a chemical reaction to take place?
3) Why do some reaction release energy and some absorb it?
4) What happens to the chemical substances at the molecular level when reactions release energy, or absorb energy?

1) What types of reactions occur in terms of energy?

to answer this question complete Activity #1 below

Click on picture	Activity #1
	Concept Attainment: Types of Reactions (energy)

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