The Periodic Table/ Groups/ Metals and Non-Metals

Question 1

Which Scientist ordered his Periodic table by Atomic weight?

Answer 1

John Dalton

Question 2

What did John Newlands order his periodic table in terms of?

Answer 2

By weight and put into 8s.

Question 3

What led to Mendeleev’s table being accepted

Answer 3

He ordered his periodic table in terms of atomic mass and grouped by properties but left gaps for undiscovered elements.

Question 4

After Mendeleev, how was the periodic table arranged?

Answer 4

In terms of atomic number

Question 5

Which two elements did Mendeleev swap around on the periodic table?

Answer 5

Tellurium and Iodine

Question 6

Why are some elements swapped around in the periodic table?

Answer 6

In order to fit the properties of the groups they are in

Question 7

How did the discovery of isotopes prove that mendeleev was right not to place elements in order of atomic mass?

Answer 7

Isotopes of the same element have different atomic masses but have the same chemical properties so occupy the same position on the periodic table.

Question 8

What are the vertical columns in the periodic table called?

Answer 8

groups

Question 9

What are the rows in the periodic table called?

Answer 9

Periods

Question 10

What does the period number tell you?

Answer 10

Number of shells the element has

Question 11

What does the group number tell you?

Answer 11

Number of electrons in its outer shell.

Question 12

What are properties of metals?

Answer 12

Strong, Good conductors of heat and electricity, high boiling and melting points, malleable, high density

Question 13

What are properties of non-metals?

Answer 13

Brittle , poor conductors of heat and electricity, low density

Question 14

What are properties of transition metals?

Answer 14

Good conductors of heat and electricity, very dense, strong, shiny, can form more than 1 ion, forms coloured compounds, good catalysts.

Question 15

What is the trend in reactivity in group 1?

Answer 15

Increasing reactivity going down the group

Question 16

What is the trend in melting and boiling points in group 1?

Answer 16

Decreases going down the group

Question 17

What do group 1 metals react with water to produce?

Answer 17

hydrogen gas and metal hydroxides

Question 18

What do group 1 metals react with chlorine gas to produce?

Answer 18

Metal chloride salts

Question 19

What do group 1 metals react with oxygen to produce?

Answer 19

metal oxide

Question 20

What are properties of group 1 metals?

Answer 20

Really reactive, less dense, weak , soft , lower melting points (except mercury)

Question 21

What is fluorine?

Answer 21

A yellow gas

Question 22

What is chlorine?

Answer 22

A dense green gas

Question 23

What is Bromine?

Answer 23

A red-brown volatile liquid

Question 24

What is Iodine?

Answer 24

A purple vapour

Question 25

What is the trend in reactivity in Group 7?

Answer 25

It becomes less reactive

Question 26

What is the trend in MP and BP in Group 7?

Answer 26

Increasing melting and boiling points

Question 27

What are the Group 0 elements at room temperature?

Answer 27

Colourless gases

Question 28

What is the pattern in boiling points of group 0?

Answer 28

They increase

Question 29

Why is there an increase in boiling point in group 0 elements?

Answer 29

There is an increase in the number of electrons in each atom leading to greater intermolecular forces between them which they need to overcome.

Question 30

Why do the group 0 elements become less reactive going down the group?

Answer 30

Because its harder to gain an extra electron as the outer shell's further from the nucleus