1.6 Periodic Table

Question 1

What is an element

Answer 1

A substance consiting of only one type of atom

Question 2

What is a compound

Answer 2

two or more elements chemically combined

Question 3

Mendeleev arranged elements in order of their

Answer 3

Atomic masses

Question 4

Differences in Mendeleev’s table and the modern day periodic table

Answer 4

Mendeleev arrange in order of atomic mass
Modern arranged in order of atomic number

Mendeleev had fewer elements with gaps
Modern has more elements with no gaps

Mendeleev’s table noble gases were not included
Modern Table Noble gases are included

Question 5

Which two elements are liquid at room temperature

Answer 5

Mercury
Bromine

Question 6

Physical Properties of Metals

Answer 6

Most are solids except mercury

Good conductors of heat and electricity

High melting point

Hard and dense

Shiny when freshly cut

Can be drawn into wires (ductile)

Make a bell sound when struck (sonorous)

Question 7

Properties of Non Metals

Answer 7

Some are gases some are solids. (Bromine ) is a liquid

Most are dull

Not sonorous

Bad conductors of heat and electricity

Question 8

Group one is known as what and why

Answer 8

Group one is the Alkali metals

This is because they react with water to form an alkali solution

Question 9

All group one metals react explosively with acid

Answer 9

All group one metals react explosively with acid

Question 10

Group 7 is known as

Answer 10

The Halogens

Question 11

Diatomic meaning

Answer 11

Two of the same atoms are bonded together by a covalent bond

Question 12

Group 0 is known as and why

Answer 12

The noble Gases

All unreactive as they already have a full outer shell

The boiling points increase as you go down the Group

Question 13

The Transition metals characteristics

Answer 13

Good conductors, malleable, ductile, high density