Question

Define :- Homogeneous
Define :- Matter
Define :- Heterogeneous
Define :- Energy
Define :- Mixture
Define :- Elements
Define :- Compounds
Define :- Substances
Define :- Pure substances
Define :- Molecules
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class 9th ​

Answer 1

Answer:

‍♂️ this is too much

1. homogeneous: A mixture in which the composition is uniform throughout the mixture. mixture: consists of multiple substances put together. substance: It has a uniform and definite composition.

2.matter refers to anything that occupies space and has mass

3. heterogeneous: : A mixture in which the composition is non uniform throughout the mixture.

4.Energy is a property of objects which can be transferred to other objects or converted into different forms

5. mixture is a material made up of two or more different Chemical substance/substances which are not chemically combined. 

6. compunds: any substance composed of identical molecules consisting of atoms of two or more chemical elements.

Answer 2

Answer:

1) Matter: Anything that has mass and occupies space is matter .

2) Compounds: A pure substances that is made of two or more elements

Eg: Sodium , Chloride, carbon-dioxide

3) Elements :An elements is a pure substance that cannot be broken down into simpler Substance

Eg: Sodium,Carbon , Sulphur

4) Molecules : Two or more atoms combine to form a molecule

Eg: Water (H2o ) contain two atoms of hydrogen and one atoms of oxygen .

5) Mixture: A Mixture is an impure substance that is made of two or more elements or compounds or both combined together.

Eg : Mixture of sugar and sand coffee and milk .

6) Energy : The ability to do work

7) Homogeneous : It is a uniform mixture in which the compounds cannot be seen apart

Eg : Mixture of sugar and water

8) Heterogeneous : A Mixture that is not uniform and the components can be seen apart

Eg: Mixture of sand and water

9) Substance : physical material from which something is made or which has discrete existence the substance of nerve tissue. 2 : matter of particular or definite chemical constitution.

10)Pure substance : A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.