atomic structure

Question 1

what is the name of the process that describes he change from a SOLID to a LIQUID

Answer 1

Melting

Question 2

what is the name of the process that describes the change from a LIQUID to a GAS

Answer 2

Evaporation

Question 3

what is the name of the process that describes he change from a SOLID to a GAS

Answer 3

Sublimation

Question 4

what is the name of the process that describes he change from a GAS to a LIQUID

Answer 4

Condensation

Question 5

what is the name of the process that describes he change from a LIQUID to a SOLID

Answer 5

Solidification

Question 6

What are the particles that make up an atom?

Answer 6

Protons, neutrons and electrons

Question 7

What is the relationship between protons and electrons?

Answer 7

Number of protons = number of electrons

Question 8

What is the number of protons/number of electrons also known as?

Answer 8

The atomic number

Question 9

What makes up the atomic mass?

Answer 9

Protons + electrons

Question 10

How do you find the number of neutrons?

Answer 10

Neutrons = atomic mass - atomic number

Question 11

Why are atoms neutrally charged?

Answer 11

They have the same number of protons and neutrons

Question 12

What are isotopes?

Answer 12

Atoms that belong to the same element but have different numbers of neutrons

Question 13

What is the relative atomic mass (Ar)

Answer 13

Average mass of all atoms belonging to a particular element.

Question 14

How do we work out the Relative Atomic mass?

Answer 14

(Mass of isotope x percentage quantity of isotope) + (Mass of isotope x percentage quantity of isotope)

Question 15

What is the Relative Formula Mass (Mr)?

Answer 15

Mass of one formula unit of any compound

Question 16

How do we work out the Relative Formula Mass?

Answer 16

Adding together all the atomic masses of each element

Question 17

Where is most of the mass of the atom located?

Answer 17

In the nucleus because it is a very concentrated area