Chemical Changes

Chemical Changes

Published on 11 May 2020
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Transcript
00:04
Chemical properties
00:06
Grade 4
00:09
A chemical property is a characteristic that describes the object by changing its identity.
00:10
Examples: burning a paper, iron rusting, reaction of an acid with carbonates, making pizza.
00:15
Iron if left for a long period of time in a humid place, rusts. It's color changes.
00:16
When a paper is burned it turns into ash.
00:18
When the pizza dough is left for few hours it rises.
00:22
Examples of chemical properties
00:28
A chemical change takes place when a substance changes intirely into a new subsatnce.
00:31
During a chemical change the mass stays the same.
00:33
Rust, flammability, reactivity
00:36
Thank You