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प्रश्न
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
उत्तर
| Atom | Building block of matter |
| Element | Atoms of the same kind |
| Compound | Atoms of different kinds |
| Molecule | Smallest unit of a substance |
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संबंधित प्रश्न
Name: A form of carbon used as a gem
Give one use of the following substance:
Iron
Answer the following question:
Give the advantages of using symbols instead of names of elements or compounds.
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
Write an answer to the following question in your own words.
Which elements (metals and non-metals), compounds and mixtures do we use in our day-to-day life?
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
Non-metal conducting electricity :______ :: Metal conducting electricity : Copper
What are elements? What are they made of?
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal other than carbon that shows allotropy.
Reason out
Elements are called semimetals.
