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What is a mixture or pure substance?
A mixture consists of two or more components that are mixed, but not chemically combined, and can exist in various ratios. A pure substance is an element or a compound, having a definite composition.
Is a table salt pure or a mixture?
Table salt is a pure substance. It is combined in such a way that it is uniform and definite in composition.
One difference between a compound and a mixture is a compound always?
A compound always has a fixed chemical composition where the elements are bonded together in specific ratios, forming a new substance with unique properties. In contrast, a mixture is a physical combination of two or more substances that can be separated by physical means, and the components retain their original properties.
What are the characteristics of a subtances and mixtures?
The components of a mixture are not chemically combined and do not have a definite composition. A pure substance is either an element or a compound (in which case it is composed of elements that are chemically combined) and has a definite composition.
How mixtures different from substances?
The components of a mixture are not chemically combined and do not have a definite composition. A pure substance is either an element or a compound (in which case it is composed of elements that are chemically combined) and has a definite composition.
What is the difference between a mixture and a mixture homeogene heterogeneous?
A mixture is composed of substances that are not chemically combined, and which do not have a definite composition. A homogeneous mixture is uniform throughout. A solution is a homogeneous mixture. A heterogeneous mixture is not uniform throughout. Examples of a heterogeneous mixture are granite or beef stew.
The composition of a mixture can vary unlike a compound?
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.
Why do ratios represent averages rather than definite numbers?
They do not. They can represent definite numbers just as well and definite numbers can be averages.
What is matter that can vary in composition?
A mixture is matter that can vary in composition, consisting of two or more substances that are not chemically combined. Mixtures can have varying ratios of components and can be separated by physical means. Examples include saltwater and air.
Why is water not classified as a mixture?
Water is not classified as a mixture because it is a pure substance with a definite chemical composition (H2O). A mixture, on the other hand, consists of two or more substances physically combined with no fixed composition.
Is borax a compound or heterogeneous mixture?
Borax is a compound composed of boron, sodium, and oxygen atoms in a specific chemical structure. It is not a heterogeneous mixture because it has a definite composition with fixed ratios of its constituent elements.
Do mixture combine in set or fixed pattern?
No mixture has no definite proportion
