Describe what happens in a single replacement reaction. what can replace what?

The one element is substituted in place of other element in compound.

Explanation:

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

For example:

Consider the reaction between zinc and silver nitrate. In this chemical reaction the zinc is substituted in place of silver in silver nitrate compound.

Chemical equation:

2AgNO₃ + Zn → ZnNO₃ + 2Ag

The starting material consist of compound ( AgNO₃) and pure element (Zn).

After reaction a new compound ( ZnNO₃) and pure element (Ag) is generated.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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