Friday, October 14, 2016

Physical and Chemical Changes





In this video I would like to talk about physical and chemical changes. Physical changes are changes in appearance only.

A new substance is not created and new chemical bonds are .not formed or broken.

For example, take this stack of paper, and wading it into smaller pieces is a physical change.It still has the same properties as the original paper.

Cutting someone's hair is a physical change.

The hair has the same properties as the original hair.

Phase changes are physical changes.

When ice goes to solid,liquid ,then a gas and back it is a physical change.

Most mixtures are a physical change.

Mixing salt and water is a physical change because you can separate it later.

Chemical changes on the other hand create a new substance.

It involves breaking or making new chemical bonds.

between atoms.

Chemical changes leave behind clues or indicators of a chemical change.

Here are 5 indicators of a chemical change.

First if you see burning or fire it is a chemical change.

A temperature change without heating or cooling is a chemical change.

An explosion is a chemical change. They are also pretty cool.

A change in color is a chemical change.

A change in odor is a chemical change and anytime you have bubbles of fizzing you have a chemical change.

Thanks for watching physical and chemical changes,, MooMooMath and Science uploads a new Math and Science video everyday.



MooMooMath and Science uploads a new Math and Science video everyday
Please visit our channel

For Math help visit our website: