Atoms

Question 1

What is the atomic number?

Answer 1

Number of protons

Question 2

What is the atomic mass?

Answer 2

Protons and neutrons

Question 3

Do atoms possess an overall charge?

Answer 3

No, they are electrically neutral

Protons = electrons

Question 4

What mass do electrons have?

Answer 4

Negligible mass

Question 5

What mass do protons have?

Answer 5

1

Question 6

What mass do neutrons have?

Answer 6

1

Question 7

What is atomic mass measured in?

Answer 7

Atomic mass units (amu)

Question 8

What are isotopes?

Answer 8

• Versions of the ‘same’ atom e.g. Carbon
• Same number of protons & electrons
• Different number of neutrons

Question 9

How many electrons can the first shell contain?

Answer 9

2

Question 10

How many electrons can the second shell contain?

Answer 10

8

Question 11

How many electrons can the third shell contain?

Answer 11

18

Question 12

What are the 4 types of orbitals?

Answer 12

• S orbitals
• P orbitals
• D orbitals
• F orbitals

Question 13

How many electrons can S-orbitals contain?

Answer 13

2

Question 14

How many electrons can P-orbitals contain?

Answer 14

6

Question 15

How many electrons can D-orbitals contain?

Answer 15

10

Question 16

What’s the electron configuration of hydrogen?

Answer 16

1s1

Question 17

What group are halogens?

Answer 17

Group 7

Question 18

How do you calculate relative atomic mass?

Answer 18

Mass number of isotope x abundance + Mass number of isotope x abundance / 100