Is a tree growing a chemical or a physical change?

Answer 1

First of all lets understand Physical & Chemical Change.

Physical change can be reversed and the chemical properties of the two states remain the same.

Chemical change cannot be reversed and the chemical properties of the two state are entirely different.

Now lets get back to the question. Is growing a tree a physical or a chemical change.

The growing of a tree requires chemical changes, primarily the conversion of water and carbon dioxide into cellulose and oxygen.

So the growth results primarily from chemical changes.

Answer 2

A tree growing is DEFINITELY a chemical change, because it is irreversible!(you can't reverse a tree's growth!)

An example of a chemical change is :- cooking a meal. Once you have cooked the meal, you can't reverse it !Chemical changes are IRREVERSIBLE.

An example of a physical change is:-mixing powdered iron and powdered sulphur. You can easily separated the mixture by using a magnet to separate the iron from the mixture.This change is REVERSIBLE.

Answer 3

All biochemical processes are of course chemical changes; but growing of a plant involve also physical changes.

Answer 4

A tree growing is considered a physical change, as it involves a change in the size and shape of the tree rather than a change in its chemical composition.