It can if isotopes are present. They can contain different numbers of neutrons in the nucleus.
Yes, in a mixture, the substances are physically combined and can be present in any proportion. This allows the composition to vary, unlike a compound where the elements are chemically combined in fixed ratios.
I am not 100% sure, but i believe variable composition is when the composition of a mixture can vary, or contain different properties, elements/compounds... etc. An example of variable composition would be a heterogeneous mixture, which has no uniform way of being composed. Where as its opposite, a homogeneous mixture, has a set composition of the same properties, elements/compounds... etc. and can be recreated.
The composition of pure substances, such as elements and compounds, are always the same. The composition of mixtures can vary.
Compounds differ from mixtures because compounds have a fixed chemical composition with elements chemically bonded in a specific ratio, while mixtures can vary in composition with no fixed ratio. Compounds have specific properties different from their constituent elements, while mixtures retain the properties of their components.
For substances, composition means the constituent materials or elements. For writing or music, composition is the act of composing or creating, combining the separate elements or aspects into a whole.
The elements present in toothpaste can vary, but common ingredients include fluorine, carbon, hydrogen, and oxygen. The number of atoms in toothpaste would be a combination of these elements depending on the specific chemical composition of the toothpaste formula.
Yes, the composition of a compound is fixed and consistent, always containing the same ratio of elements. This is a fundamental characteristic of compounds and is defined by their chemical formula.
No, a mineral does not always contain certain elements in definite proportions. While minerals have a specific chemical composition, the proportions of elements can vary within certain limits and still be considered the same mineral.
A mixture is a physical combination of two or more substances that are not chemically bonded, allowing their composition to vary. This is because mixtures retain the properties of their individual components and can be easily separated through physical means, while compounds are chemically bonded in fixed ratios, resulting in consistent composition and properties.
A compound has a definite composition, while a mixture's composition can vary.
False. The composition of a compound is fixed, meaning it always contains the same elements in the same proportions. In contrast, the composition of a mixture can vary, as it is a physical combination of substances that can be in different proportions.
No. Stars vary in mass, color, size, temperature, and composition of trace elements.