21 мар. 2018 г. · No. Explanation: Elements are pure substances BUT they can exist as isotopes which are different forms of the same atom. |
Composition of Elements: The compound that is represented by different ratios of the elements, then the compound is known as having variable composition. |
7 апр. 2021 г. · In chemistry, a chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be ... What is the difference between 'uniformly mixed' and 'variable ... Do some elements have variable valency? - Quora Why do elements have variable valency? - Quora Why do transition metals show variable valencies? Why do ... - Quora Другие результаты с сайта www.quora.com |
In Mixtures and Pure Substances. A mixture is a substance with a variable composition, meaning that it is composed of molecules or atoms of differing types. |
A mixture can have variable composition, depending on the proportions of the mixed substances. A pure substance is a form of matter with a uniform composition ... |
6 нояб. 2023 г. · Multiple choice question. A compound is a substance in which the atoms of two or more elements are physically combined in variable proportions. |
15 февр. 2023 г. · Elements have a number of properties that are unique ... can have variable composition, meaning the proportion of the components can vary. |
(i)Can have variable composition of constituent elements(A)Compound(ii) – – – is new substance formed due to reaction of two constituent elements(B)Mixture(iii ... |
Variable composition is one indication of a mixture. In a mixture of magnesium and selenium, the two elements maintain their individual properties. |
A chemical element is a chemical substance whose atoms all have the same number of protons. The number of protons is called the atomic number of that element. List · Discovery of chemical... · Naming · Abundance of the chemical... |
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