4.5.1 - The Periodic Table

Question 1

Define atomic number.

Answer 1

The number of protons in an atom. (same as electrons)

Question 2

Define mass number.

Answer 2

The number of protons and neutrons in an atom.

Question 3

What is the maximum number of electrons in the first shell?

Answer 3

2

Question 4

What is the maximum number of electrons in the second shell?

Answer 4

8

Question 5

What is the maximum number of electrons in the thrid shell?

Answer 5

8

Question 6

Who is credited with the creation of the modern Periodic Table?

Answer 6

Mendeleev

Question 7

How are the elements arranged in the Periodic Table?

Answer 7

In order of increasing atomic number.

Question 8

Why are elements arranged by atomic number in the Periodic Table?

Answer 8

To make sure groups have elements with similar properties.

Question 9

What are the horizontal rows of the Periodic Table?

Answer 9

Periods

Question 10

What are the vertical columns of the Periodic Table?

Answer 10

Groups

Question 11

What are the Group 1 elements called?

Answer 11

Alkali Metals

Question 12

What are the Group 7 elements called?

Answer 12

Halogens

Question 13

What are the Group 0/8 elements called?

Answer 13

Noble Gases

Question 14

Name the group located between Group 2 and 3.

Answer 14

Transition Metals

Question 15

Which side of the Periodic Table are the metals found?

Answer 15

Left-hand side

Question 16

Which side of the Periodic Table are the non-metals found?

Answer 16

Right-hand side

Question 17

What does group number tell you about an element?

Answer 17

How many electrons are in the outer shell.

Question 18

What does the period number tell you about an element?

Answer 18

How many shells / energy levels the element has.

Question 19

Define inert.

Answer 19

Unreactive

Question 20

Why are the noble gases inert?

Answer 20

They are stable as their outer shell is full.

Question 21

Describe the trend in reactivity for alkali metals as you go down the group.

Answer 21

Increases

Question 22

Describe the trend in density for alkali metals as you go down the group.

Answer 22

Increases

Question 23

Describe the trend in melting and boiling point for alkali metals as you go down the group.

Answer 23

Decreases

Question 24

Describe the trend in reactivity for halogens as you go down the group.

Answer 24

Decreases

Question 25

What type of ion do metals form?

Answer 25

Positive - they lose electrons

Question 26

What type of ion do non-metals form?

Answer 26

Negative - they gain electrons

Question 27

Define an ion.

Answer 27

A charged particle caused by an atom losing or gaining electrons.

Question 28

Describe the trend in melting and boiling point for noble gases as you go down the group.

Answer 28

increases

Question 29

Describe the trend in reactivity for noble gases as you go down the group.

Answer 29

unreactive

Question 30

Describe the trend in density for noble gases as you go down the group.

Answer 30

increases

Question 31

Describe the trend in melting and boiling point for halogens as you go down the group.

Answer 31

increases

Question 32

Describe the trend in density for halogens as you go down the group.

Answer 32

increases

Question 33

Calculate the PEN number for Lithium. (atomic mass = 7 proton number = 3)

Answer 33

P = 3 E = 3 N = 7 - 3 = 4

Question 34

What ion does Lithium form?

Answer 34

positive

Question 35

Calculate the PEN number for Fluorine. (atomic mass = 19 proton number = 9)

Answer 35

P = 9 E = 9 N = 19 - 9 = 10

Question 36

What ion does Fluorine form?

Answer 36

Negative