Super Simple Chemistry by D.K. Publishing

Super Simple Chemistry by D.K. Publishing

Author:D.K. Publishing [Dorling Kindersley, Inc. (COR); Smithsonian Institution (COR)]
Language: eng
Format: epub
Publisher: Dk Pub
Published: 0101-01-01T00:00:00+00:00


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Heating increases the

temperature of the surroundings.

How Exothermic

Reactions Work

Exothermic reactions transfer

the energy stored in chemical

bonds to the surroundings.

Here, potassium reacts with

water to produce potassium

hydroxide and hydrogen gas.

1.

Potassium is added

to water and produces

potassium hydroxide

and hydrogen gas.

2.

Increased heating

occurs, causing the

hydrogen to ignite with

a lilac flame.

3.

The hot metal gives off

sparks and disappears with

a small explosion at the end

of the reaction.

Flames can be seen

during combusrion

reactions.



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