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Question 1

What are atoms?

Answer 1

Smallest particles that can have the chemical characteristics of an element

Question 2

State definition of nucleons

Answer 2

Protons and neutrons

Question 3

Why are atoms electrically neutral?

Answer 3

Equal number of electrons and protons
Negative and positive charge on electrons and protons balance
Hence, atoms have no overall charge
Thus, electrically neutral

Question 4

Relative mass and relative charge of proton

Answer 4

1, + 1

Question 5

Relative mass and relative charge of neutron

Answer 5

1,0

Question 6

Relative mass and relative charge of electrons

Answer 6

1/1840, -1

Question 7

Proton number definition

Answer 7

Number of protons

Question 8

Atomic number definition

Answer 8

Number of protons

Question 9

Mass number definition

Answer 9

Total number of protons and neutrons

Question 10

Relative atomic mass definition

Answer 10

Total number of profess and neutrons

Question 11

What ave isotopes?

Answer 11

Atoms of the same element that has the same proton number but different nucleon number
Similar chemical proper ties, different physical properties

Question 12

Do isotopes belong to the same element? Why?

Answer 12

Yes. Proton number of isotopes remain unchanged.

Question 13

Which electron in the atom possess the greatest energy?

Answer 13

Valence elections

Question 14

How to determine chemical properties of on element ( referring to the periodic table)?

Answer 14

Depends un the number of valence elections
Elements in same group → same number of valence electrons
Hence elements in same group → similar chemical properties