SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When two or more things combine chemically.
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Any substance that can not be broken down into simpler substances.
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A type of mineral that is found underground.
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Different seasons such as fire, water, air, and earth.
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Detailed explanation-1: -The correct option is B element. An element is the substance which cannot be broken down further into simpler components by a chemical reaction.
Detailed explanation-2: -Compound: A compound is a substance that can be split into simpler and different substances by chemical means. For example, Water H 2 O is a compound made with two different elements called and Oxygen O 2 . Hence it can be split into these two different elements.
Detailed explanation-3: -An element is a pure substance that consists of only one kind of atom. Each element has its own unique properties. Example: Hydrogen H has unique properties and the atoms of Hydrogen H show the same properties. Elements cannot be separated or broken down into simpler components by physical or chemical methods.