Give two region to support the statements that carbon dioxide is a compound a nd not a mixture
Answers
A compound always contains the same relative amounts of each element. For example, the compound carbon dioxide is always made up of two atoms of oxygen for each atom of carbon. Its chemical formula is therefore CO2. ... Unlike compounds, the parts of a mixture are not always in the same proportion.
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Carbon dioxide is a compound because:
i) It has different chemical and physical properties from the carbon and oxygen the makes it.
ii) You can only separate carbon from oxygen in carbon dioxide using a chemical reaction.
iii)You cannot vary the amount of carbon or oxygen in a carbon dioxide molecule
iv) Carbon and oxygen that make up the carbon dioxide are chemically bonded to form this compound.
A molecule of it is composed of a lone carbon atom and two oxygen atoms, each connected to the carbon atom by a covalent bond.
A compound is formed when 2 elements combine in a chemical reaction. The compound formed cannot be seperated into the constituent elements by any physical method, unlike mixtures. it doesn't show the properties of the elements combined in it (individual properties). hence as it shows all these characteristics, carbon dioxide is a compound.