Atomic structure

Question 1

What are atoms

Answer 1

• Every element is made up of small particles called atoms.
• when atoms of different,elements are different.
• Atoms of different elements are given a different number called the atomic number.
• The atoms of different elements differ in size and mass

Question 2

Whats the charge and mass of protons

Answer 2

Charge=1+

Mass=1

Question 3

Whats the charge and mass of neutrons

Answer 3

Charge=0

Mass=1

Question 4

Whats the charge and mass of electrons

Answer 4

Charge=-1

Mass=0

Question 5

What are isotopes?

Answer 5

Elements that have different mass numbers and the same atomic number.

Question 6

What are ions?

Answer 6

Atoms which have gained or lost electrons

Question 7

What does a negative charge on ions mean?

Answer 7

Ions that have gained electrons

Question 8

What does a positive charge in ions mean?

Answer 8

Ions that have lost electrons

Question 9

Number of neutrons?

Answer 9

Mass number-atomic number

Question 10

Number of protons?

Answer 10

=atomic number

Question 11

Number of electrons?

Answer 11

=number of protons=atomic number

Question 12

How to know what isotope is more abundant?

Answer 12

The relative atomic mass is closer to the mass of the isotope that is most abundant

Question 13

maximum number if electrons on each shell?

Answer 13

first shell - max 2
second shell - max 8
third shell - max 8

Question 14

Elements in the same group…

Answer 14

Havd the same number of outer

electrons and have similar chemical properties.