Atoms , Elements And Compounds

Question 1

What do atoms contain?

Answer 1

Protons , Neutrons and Electrons

Question 2

What is the radius of an Atom?

Answer 2

0.1 nanometers

Question 3

What is the Relative Mass of Proton?

Answer 3

+1

Question 4

What is the Relative Mass of Neutrons?

Answer 4

+1

Question 5

What is the Relative Mass of Electons?

Answer 5

Very small

Question 6

What is the charge of protons?

Answer 6

+1

Question 7

What is the charge of Neutrons?

Answer 7

0

Question 8

What is the charge of Electrons?

Answer 8

-1

Question 9

What is an ion?

Answer 9

An ion is an atom or group of atoms that has lost or gained electrons.

Question 10

What is a Element?

Answer 10

A substance that only contains atoms with the same number of protons.

Question 11

What are isotopes?

Answer 11

Isotopes are different forms of the same element which have the same number of protons but a different number of neutrons.

Question 12

What is the formula of the relative atomic mass?

Answer 12

Relative Atomic mass = 
sum of (isotope abundance x isotope mass number) divided by sum of abundance of all the isotopes

Question 13

What are Compounds?

Answer 13

Compounds are substances formed from two or more elements which are held together by chemical bonds.

Question 14

What is the formula for Ammonia ?

Answer 14

NH3

Question 15

What is the formula for Sodium Carbonate?

Answer 15

Na2CO3

Question 16

What is the formula for Sulfuric Acid?

Answer 16

H2SO4