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A pure substance is a substance that consists solely of the same atoms/molecules.
So a volume of water that contains only H2O is a pure substance. A block of iron that contains only Fe atoms is pure substance. A pure substance can be composed of atoms or molecules as I said before BUT they have to be exactly the same.
A substance that has constant chemical composition and characteristics
What else can I help you with?
What are 2 pure substances?
A pure substance is a homogeneous chemical substance which means its composition is constant and its properties are consistent too. Some examples of this kind of substances are water, baking soda and sucrose.
Carbon and hydrogen are examples of pure substances or?
Elements.
Matter is Classified as mixtures and?
Matter is classified as mixtures and substances. Mixtures are composed of two or more different substances that are physically combined, while substances are pure forms of matter that cannot be separated by physical means. Substances are further divided into elements and compounds.
Is potassium bromide a pure substances?
This is an ionic compound and if it is not mixed in solution or found with other substances, it is pure.
What makes something a pure substance?
A pure substance consists of only one type of molecule or element and has a fixed chemical composition. It cannot be separated into simpler substances by physical means such as filtration or distillation. Examples include elements like gold or compounds like water.
What is the definition of pure water in chemistry?
Pure water in chemistry is defined as water that contains only H2O molecules and no other substances or impurities.
What do you think makes compounds pure and mixtures impure?
A compound is, by definition, a single, and hence pure substance (composed of molecules), and a mixture is, also by definition, two or more substances which are mixed together.
Most modern definition of element?
Elements are those pure substances which are formed by only one kind of atoms.
Are elements pure substances or mixed substances?
pure are you dumb or something
What can pure substances be classified as?
Pure substances are divided into elements and compounds.
Can pure substances be mixtures?
No, pure substances cannot be mixtures. A pure substance is made up of only one type of atom or molecule, with uniform properties throughout the sample. Mixtures, on the other hand, are composed of two or more different substances physically combined, each retaining its individual properties.
How many substances are pure substances?
Practically (exceptions exist) all known substances can be obtained in a pure fom.
What are pure substances solutions homogeneous mixtures colloids or compounds?
Compounds and solutions are pure substances
What are the characteristic of pure substances?
The characteristics of pure substances are:fixed melting pointfixed boiling pointsfixed valencyfixed densitystability
What is the definition of impure substances?
Impure substances are materials that contain more than one type of particle or molecule. They may have impurities mixed in with the main substance, affecting its properties and characteristics. Examples include mixtures, alloys, and solutions.
Are compounds pure?
Yes, compounds are pure substances.
Is matchbox a pure substance?
Matchbox are not pure substances.
