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rjkz [21]
3 years ago
12

Which of these is an example of a chemical change?

Chemistry
2 answers:
Alenkinab [10]3 years ago
8 0

Answer: Forming oxygen By bubbling flourine through water

Explanation:

Chemical change is the change in which chemical composition of the substance changes by rearrangement of atoms.

Physical change is a change in which only the physical properties such as size, shape etc change and there is no rearrangement of atoms.

1. Dissolving two cups of flour in a liter changes the state and hence is a physical change.

2. Pouring water from a large trough into a beaker is a physical change.

3. Decreasing the motion of water molecules by freezing changes the state and hence is a physical change.

4. Forming oxygen By bubbling flourine through water involve rearrangement of atoms and thus is a chemical change.

F_2+H_2O\rightarrow 2HF+O_2

Natasha2012 [34]3 years ago
5 0

Forming oxygen by bubbling fluorine through water.

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