When you mix vinegar and baking soda, during the chemical reaction, will there be an increase in temperature?

Anytime there is a chemical reaction and energy is
released, there is an increase in temperature. As the chemicals come together, the
components of each begins to alter and speed up on a cellular level. This causes
friction, and friction causes heat.

The vinegar and baking
soda provides an example of an acid-base reaction (of chemically-reactive agents), and
the combination gives off a gas: carbon dioxide. As it magnifies, it needs to escape,
which forces a small "explosion" of energy.

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It is also important to remember that the CO2 gas
that is created takes up more space than the solid baking soda and liquid
vinegar!

When the two
ingredients are introduced to one another, the chemical reaction does create
an increase in temperature. The reaction lasts only a very short time ("less
than a minute") during which the temperature decreases
radically.

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This is an example of
an endothermic reaction, one that needs heat to make it
happen.

With the increase of
space taken up by the chemical reaction, and the energy that is released in combining
the gases, students will enjoy watching volcanoes explode, balloons inflate and maybe
even bottle rocket fly.