Question

(2) What do you mean by a reversible change? Give two examples.
both 2 and 3 answer who will give me answers ​

Answer 1

Answer:

1. A reversible change is a change that can be undone or reversed. If you can get back the substances you started the reaction with, that's a reversible reaction. ... Examples of reversible reactions include dissolving, evaporation, melting and freezing.

2. Heat energy produces various effects on an object 

Change in temperature

Change in dimensions

Change in state and  

Chemical Change

Explanation:

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Answer 2

Answer:

1. reversible change is a change that can be undone or reversed. If you can get back the substances you started the reaction with, that's a reversible reaction. ...

Example-

Ammonium chloride is a white solid. It breaks down when heated, forming ammonia and hydrogen chloride. ...

Ammonium chloride ⇌ ammonia + hydrogen chloride.

The symbol ⇌ has two half arrowheads, one pointing in each direction. It is used in equations that model reversible reactions:

• Adding heat causes changes to happen.

It changes from a solid to a liquid. The fire gives the boys heat. Heat melts ice cubes. The solid ice changes to liquid water.

• Raises the temperature.
• Increases volume.
• Changes state.
• Changes physical properties

Explanation:

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