Lsn3️⃣

Question 1

An Atom is composed of small dense ______ charged nucleus at the center composed of ______ and ______ (most of the mass) with charged electrons in orbiting the ______

Answer 1

An Atom is composed of small dense positively charged nucleus at the center composed of protons and electrons (most of the mass) with charged electrons in orbiting the nucleus

Question 2

State the relative mass, relative charge and position of the proton.

Answer 2

Relative mass= 1
Relative charge= 0
Position= nucleus

Question 3

State the relative mass, relative charge and position of the neutron

Answer 3

Relative mass= 1
Relative charge= +1
Position= nucleus

Question 4

State the relative mass, relative charge and position of the electron

Answer 4

Relative mass= 1/1840
Relative charge= -1
Position= shells orbiting the nucleus

Question 5

What is the atomic number

Answer 5

The number of protons in the nucleus of an atom

Question 6

What is the mass number

Answer 6

The total number of protons and neutrons in the nucleus of an atom

Question 7

Why do the atoms of one element differ from those of another

Answer 7

The number of protons, neutrons and electrons of each atom are different