Answer: A pure substance has a constant chemical composition. Examples of pure substances are ammonia, water and baking soda. Impure substances consist of several elements & Links. Examples of impure substances are muddy water, lettuce and salt in the water.
The pure water is free of any sediment, microbes, chemicals and other materials that degrade water quality, while the impure water contains all contaminants.
Definition of impure
: not pure: such as a: Containing something impure: putrid impure water. b: An impure chemical mixed or impregnated with a foreign and normally undesirable substance. c : lewd, unchaste.
An impure substance is one that contains a mixture of elements, a mixture of compounds, or a mixture of elements and compounds.
It contains the same type of atoms or molecules and has certain physical and chemical properties. Example of pure substance is oxygen gas, consisting of oxygen molecules O2. (b) A substance in which other substances are also present in smaller or larger quantities is called an impure substance.
Pure substances are either elements or compounds, while a mixture is a combination of two or more products. We know milk contains water, fat, solids, and protein, so it’s not a pure substance. It is also known as a colloidal mixture.
The components of a mixture are not chemically combined, so the mixture still has all the properties of its components. A mixture has no specific boiling or freezing point. All these properties of a mixture make it an impure substance.
A substance that has a fixed chemical composition throughout is called a pure substance, e.g. As water, air and nitrogen. A pure substance need not consist of a single element or compound.
Definition of impurity
1 : something that is impure or makes something else impure removing impurities from water. 2 : the quality or state of being unclean.
When we speak of a pure substance, we speak of something containing only one type of matter. This can be either a single element or a single compound, but every sample of that substance you examine must contain exactly the same thing with a fixed, unique set of properties. Pure substance.
Solution: (i) A pure substance or compound in a completely pure state, while a mixture may contain two or more elements/compounds. <br> (ii) Constituents from a mixture can be separated while pure substances remain as individual substances. <br> Example : copper (pure substance), air (mixture).
1. Pure substances cannot be separated into other substances, while a mixture is a combination of two or more pure substances. 2. A pure substance has constant physical and chemical properties, while mixtures have different physical and chemical properties (i.e. boiling point and melting point).
Option A, Diamond is a pure substance because it is composed directly of carbon atoms.
Examples of impure substances are: Muddy water: Water mixed with dirt is an impure substance. Apple Juice: Apple juice contains many different substances, including water and sugar. Salt water: Water with salt dissolved in it is impure because it contains two compounds that are not connected.