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Why is the freezing of water a physical change?
Why Is the Freezing of Water C… Home Science Chemistry States of Matter. Water freezing into ice is a physical change because the hydrogen and oxygen molecules that make up the water stay the same, despite the change in state from liquid to solid. A physical change is simply a change in the material’s physical properties, such as shape or phase.
Does freezing change the chemical identity of a substance?
It involves a liquid changing states to a solid. Thus, freezing a substance will not change its chemical identity, but its state.
What happens to matter when it undergoes chemical changes?
In these changes, the matter always stays the same. The opposite of a physical change is a chemical change, in which the individual atoms within the substance react chemically to create new substances. These chemical changes cannot be undone, because the atoms have formed new chemical bonds and the original atoms cannot be recovered.
What is a physical change in water?
A physical change is simply a change in the material鈥檚 physical properties, such as shape or phase. Water can undergo three physical changes, as it can be found as a solid, liquid or gas. Like all physical changes, these can always be reversed, such as by thawing the ice into water or boiling water to create steam.