EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are Chemical Changes?
A
Characteristics that can be observed/measured without changing the identity of the substance
B
Changes that do not affect the identity of the substance
C
A property that depends on the amount of matter in a sample.
D
When one or more substances are converted into different substances
Explanation: 

Detailed explanation-1: -A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. Substances are either chemical elements or compounds.

Detailed explanation-2: -reaction is a change in which one or more substances are converted into new substances. A chemical reaction occurs when you bake a cake. The substances that react are called reactants. The new substances produced are called products.

Detailed explanation-3: -In a chemical change, new substances are formed. In order for this to occur, the chemical bonds of the substances break, and the atoms that compose them separate and rearrange themselves into new substances with new chemical bonds.

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