Unit B | Topic 4-5 | The periodic table

Question 1

Who made The Periodic Table?

Answer 1

A Russian chemist named:
Dmitri Mendeleev

Question 2

Why did Dmitri Mendeleev leave gaps in the periodic table?

Answer 2

For elements that could still be discovered

Question 3

What does the Atomic # on an element block represent?

Answer 3

The amount of Protons (and electrons) in a neutral atom

Question 4

What does the large letter(s) on an element block represent?

Answer 4

The element symbol:
represents the element name

Question 5

What does the atomic mass on an element block represent?

Answer 5

The Protons and Neutrons in an atom

Question 6

How are elements organized?

Answer 6

• Atomic #
• Groups (columns)
• Periods (rows)
• reactivity (valence e-)

Question 7

What are periods on the Periodic Table?

Answer 7

7 rows that represent an elements amount of shells

Question 8

What are groups on the Periodic Table

Answer 8

18 columns that represents an elements amount of valence electrons

Question 9

Where can metals be found on the periodic table?

Answer 9

• Most of the left side (colums 1-13)
• some in columns 13-16
• Hydrogen is not included

Question 10

What metal is the only liquid metal on the Periodic Table?

Answer 10

Mercury (Hg)

Question 11

Properties of metals

Answer 11

• Malleable (hammered into sheets)
• Ductile (rolled into wires)
• Solid (state)
• Luster (shine)
• Conductivity (how well heat + electricity pass through it)
• Boiling point (high = stable)

Question 12

What are nonmetals in the Periodic table?

Answer 12

Usually dull and brittle materials in the form of a solid or gas (except Bromine)

Question 13

Where can nonmetals be found on the periodic table?

Answer 13

• Right side (columns 13-15) of the “staircase”
• Includes Hydrogen

Question 14

Why is hydrogen located on the left side of the periodic table despite being defined as a nonmetal?

Answer 14

Because Hydrogen only has one valence electron

Question 15

What are Metalloids?

Answer 15

A group of elements that are:
- all solid
- semiconductors
- similar properties to metals

Question 16

Where are metalloids located on the periodic table?

Answer 16

Between metals and nonmetals

Question 17

What are Alkali metals on the periodic table?

Answer 17

• Located in group 1 (excludes hydrogen)
• Soft and shiny metals
• Extremely reactive (due to their low amount of valence electrons)

Question 18

What are Alkaline Earth metals on the periodic table?

Answer 18

• Located in group 2
• Denser than Alkali metals
• Reactive, but not as reactive as Alkali metals

Question 19

What are transition metals on the periodic table?

Answer 19

• Located in groups 3-12
• Includes common metals such as silver and copper
• They form coloured compounds
• Usually hard and tough

Question 20

How can the families of groups 13-16 be identified

Answer 20

They can be identified by the element which is located at the top of their group
(i.e group 14’s head element is carbon, so group 14 is the carbon family)

Question 21

What are halogens on the periodic table?

Answer 21

• Located in group 17
• They react vigorously with other elements
• Often found in compounds

Question 22

What are noble gases on the periodic table?

Answer 22

• Located in group 18
• Nonreactive (stable)
• All located in earths atmosphere (in small amounts)