What is the basic unit of matter.?

Answer 1

#"The atom.........."#

There are about 100 or so different types of atoms, i.e. elements, which are all conveniently listed on the Periodic Table. Each individual atom contains massive particles with positive charge, and negatively charged particles with ZERO rest mass, that are conceived to whizz about the positively charged nuclear core. The number of positively charged particles in the nucleus gives #Z#, #"the atomic number"#, and this number defines the identity of the element. #Z=1#, the element is hydrogen; ......#Z=6#, the element is nitrogen; .........#Z=79#, the element is gold.

All chemical bonding, and consequently all of chemistry, is defined by the exchange and sharing of electrons between atoms.

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Answer 2

Cameron Andrews

The basic unit of matter is the atom.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.