Which of the following are indicators of a chemical change? Select all that apply. color change temperature change precipitate formation gas formation cutting a solid into smaller pieces

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03-05-2018
Chemistry

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Which of the following are indicators of a chemical change? Select all that apply. color change temperature change precipitate formation gas formation cutting a solid into smaller pieces

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mkryukova19 mkryukova19 · Answer 1 · 2018-05-03T21:52:09+02:00

mkryukova19 mkryukova19

03-05-2018

Indicators of a chemical change:
1.color change
2.temperature change
3. precipitate formation
4.gas formation

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kobenhavn kobenhavn · Answer 2 · 2019-07-01T08:34:26+02:00

Answer: color change , temperature change, precipitate formation, gas formation

Explanation:

A physical change is defined as the change in which shape, size of the atoms change. No new substance gets formed in these reactions.

Example: cutting a solid into smaller pieces

A chemical change is defined as the change in which change in chemical composition of atoms takes place. A new substance is formed in these reactions.

Characteristics of chemical reaction:

1. Change in color

2. Formation of precipitate

3. Energy is lost or absorbed