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 ... Does a homogenous mixture have a definite composition? Why do elements have variable valency? - Quora Can the composition of homogeneous mixtures vary? - 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.

Variable composition – you can vary the amount of each substance in a mixture, Definite composition – there is a fixed amount of each element in a compound.

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.

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.

Variable composition is one indication of a mixture. In a mixture of magnesium and selenium, the two elements maintain their individual properties.

Match the following:i Can have variable composition of constituent elements A Compound ii 1|c| is new substance formed due to reaction of two constituent ...