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प्रश्न
Define the term: Element
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उत्तर
Element is a substance which cannot be split up into two or more simple substances by usual chemical methods of applying heat, light or electric energy; for example, hydrogen, oxygen and chlorine.
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संबंधित प्रश्न
Differentiate between the following.
Filter Paper and Alum
Give Two Examples for Each of the Following: Inert Gases
Give two examples of Metals.
Define:
Atomicity
What is meant by H20 and 3H2O
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Why are copper and aluminium used to make electric wires?
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What do you understand by the statement: ‘metals are ductile and malleable’?
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
Indicate whether the following statement is true or false:
Noble gases are high reactive
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The most abundant elements in the universe are
Tick (√) the correct alternative from the choice given for the following statement.
The compound used as common salt is
Tick (√) the correct alternative from the choice given for the following statement
A metal which is brittle
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Select the correct answer from the choice given below.
The element which is malleable
Select the correct answer from the choice given below.
A group of atoms of elements
Select the correct answer from the choice in the bracket.
The positively charged particle of an atom.
Give an example of two liquids that form heterogeneous mixtures.
Give an account of elements known to us.
