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A substance is called a compound when it is made up of two or more different elements chemically bonded together. Compounds have a fixed chemical composition and properties that are different from the elements that make them up.
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carbon hydrogen and oxygen
The five chemical elements that make up 95 percent of biomass are carbon, hydrogen, oxygen, nitrogen, and phosphorus. These elements are essential for creating the organic molecules that form the structure and function of living organisms.
Carbon, hydrogen, and oxygen are the three elements that make up sugar. Sugar is a type of carbohydrate, and its chemical formula is typically written as C6H12O6.
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The Moon has no atmosphere.
Einsteinium is an unique chemical element.
Yes, chemical compounds are made up of elements combined together.
Berkelium is a unique chemical element.
A compound is different from the elements that make it up because it is a new substance with unique properties that are not present in the individual elements. When elements combine to form a compound, they undergo a chemical reaction that results in a new arrangement of atoms and different chemical properties.
Carbon and hydrogen. Chemical symbol CH4.
Mercury is a true, single chemical element - not a mixture.
Aquamarine contain Be, O, Al, Si.
The principal elements are C, O, H, N, P, Ca, etc.
Soup is not a chemical compound but a mixture. It will have a very large number of elements which make up the ingredients: meats, vegetables, flavourings, preservatives.
All matter is made up of different elements. Elements are pure substances that cannot be broken down further by chemical means. They combine to form compounds which make up all the substances we see around us.