?What would be a good introduction?Its about chemical reactions?

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?What would be a good introduction?Its about chemical reactions?

alka seltzer into water= temp. decreases

2006-11-26 06:48:32 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

Reactions can be classified as either exothermic or endothermic. Exothermic reactions release energy, and cause the surroundings to increase in temperature. Endothermic reactions absorb energy, and cause the temperature of the surroundings to decrease.

2006-11-26 06:54:19 · answer #1 · answered by Red Ruby 1 · 0⤊ 0⤋

How about something saying you are studying the energy transfers which occur in chemical reactions? Or perhaps you would rather say you are studying the enthalpy changes which occur during chemical reactions.

2006-11-26 14:51:51 · answer #2 · answered by physandchemteach 7 · 0⤊ 0⤋