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7th Tamil Nadu Board
IMPORTANT
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An element which is always lustrous, malleable and ductile.

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Important Questions on Matter Around Us

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7th Tamil Nadu Board
IMPORTANT
The smallest particle of matter that can exist by itself _____.
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7th Tamil Nadu Board
IMPORTANT
_____ (Symbols/Letters) of some elements are derived from Latin or Greek names of the elements.
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7th Tamil Nadu Board
IMPORTANT
There are _____ number of known elements.
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7th Tamil Nadu Board
IMPORTANT
Elements are the _____ form of pure substances. (simplest/complex)
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7th Tamil Nadu Board
IMPORTANT
The first letter of an element always written in _____ letter.
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7th Tamil Nadu Board
IMPORTANT
A molecule containing more than three atoms are known as _____. (monoatomic/polyatomic)
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7th Tamil Nadu Board
IMPORTANT
_____ is the name of the most abundant gas in the atmosphere.
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7th Tamil Nadu Board
IMPORTANT
Mercury: liquid at room temperature:: Oxygen: _____ at room temperature.