Atomic Structure and The Periodic Table

Question 1

True or false: Metallic elements don’t conduct electricity

Answer 1

False

Question 2

What are the general properties of metals?

Answer 2

High melting and boiling points
Good conductors of electricity and heat
Malleable (change shape when hit)
Dense
Shiny

Question 3

What are the general properties of non-metals?

Answer 3

Low melting and boiling points
Poor conductors of electricity (except carbon)
Brittle (break when hit)
Dull
Less dense

Question 4

What are the three particles that make up atoms?

Answer 4

Protons
Neutrons
Electrons

Question 5

Where are protons found in atom?

Answer 5

Nucleus

Question 6

Where are neutrons found in atom?

Answer 6

Nucleus

Question 7

Where are electrons found in atom?

Answer 7

Shells

Question 8

What is is the charge of a proton?

Answer 8

+1

Question 9

What is is the charge of a neutron?

Answer 9

0

Question 10

What is is the charge of an electron?

Answer 10

-1

Question 11

What are the units for protons, neutrons and electrons?

Answer 11

amu (atomic mass units)

Question 12

What is the atomic mass of protons and neutrons?

Answer 12

1amu

Question 13

What is the atomic mass of electrons?

Answer 13

approx. 1/1837 amu (can say negligible as we ignore this)

Question 14

True or false: the number of protons is the same as the number of electrons

Answer 14

True

Question 15

What is the name for the number of protons?

Answer 15

The atomic number

Question 16

How can you calculate the atomic mass?

Answer 16

Number of protons + number of neutrons

Question 17

How can you calculate the number of neutrons?

Answer 17

The atomic mass - the atomic number

Question 18

How many electrons can the 1st, 2nd, 3rd and 4th shells hold?

Answer 18

2, 8, 8, 16

Question 19

When drawing electron configuration, what do we use to represent the electrons?

Answer 19

Crosses

Question 20

How can you determine the number of electrons in the outer shell from the periodic table?

Answer 20

The group number

Question 21

How can you determine the number of shells in an element from the periodic table?

Answer 21

The period number is the number of shells

Question 22

What is an isotope?

Answer 22

When an element has multiple occurrences where they have the same number of protons but different numbers of neutrons

Question 23

What distinguishes isotopes?

Answer 23

Relative atomic mass (RAM)

Question 24

How can you calculate the relative atomic mass of two isotopes?

Answer 24

Take the mass number of one isotope and multiply it by the percentage of occurrence and do this for all isotopes. Add them all up and divide by 100

Question 25

True or false: the relative atomic mass is found by the occurrence of the isotopes not the average mass number

Answer 25

True