Question

what is the meant by a pure substance? give 3 example of pure substance.​

Answer 1

Answer:

A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds. Mixtures can be classified as homogeneous or heterogeneous.

Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances. Tin, sulfur, and diamond are examples of pure substances that are chemical elements. All elements are pure substances.

Answer 2

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☯ A N S W E R :-

• ✏Any substance is said to be pure if and only if it is made up of a single type of particles means all the particles of that substance should be of same chemical nature.

➡ Examples of pure substances :

• include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate). Crystals, in general, are pure substances.

❇ Let's go deep into the topic!

↪How can you identify a pure substance?

• Physical properties of a substance are characteristics that can be observed without altering the identity of the substance.

• Color, odor, density, melting temperature, boiling temperature, and solubility are examples of physical properties. Physical properties can be used to identify a pure substance.

↪Why compound is called a pure substance?

• Compounds are made of only one kind of molecule. The molecule is made up of two or more kinds of atoms.

• There is no physical change that can separate the compounds into more than one kind of substance. This makes a compound a pure substance.

✔ For understanding some more better pictures are attached to above attachment.

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