2.1 Atomic structure and isotopes

Question 1

What are the relative masses of the 3 sub-atomic particles?

Answer 1

P= 1
E= 1/1836
N= 1

Question 2

Where is an atom’s mass?

Answer 2

Nucleus

Question 3

‘Most atoms have an equal amount of protons and neutrons or slightly more protons.’ True or false?

Answer 3

FALSE: Most atoms have an equal amount of protons and neutrons or slightly more NEUTRONS

Question 4

Do all atoms of the same element have the same number of protons?

Answer 4

Yes

Question 5

Isoptopes are atoms of the same element with different…

Answer 5

…numbers of neutrons and different masses

Question 6

How does the number of neutrons affect the reactions of an element?

Answer 6

The number of neutrons DOES NOT affect the reactions of an element

Question 7

List 3 physical properties that a higher mass isotope would have

Answer 7

• Higher melting point
• Higher boiling point
• Higher density

Question 8

What is a ion?

Answer 8

A charged atom

Question 9

What is a cation?

Answer 9

A positive ion

Question 10

What is an anion?

Answer 10

A negative ion

Question 11

Which has more electrons, a cation or an anion?

Answer 11

Anions have more electrons