The Periodic Table

Question 1

What are the vertical columns called in the periodic table?

Answer 1

Groups

Question 2

What are the horizontal rows called?

Answer 2

Periods

Question 3

What determines the order of elements in periodic table?

Answer 3

Atomic number of the element

Question 4

Group number is the same as what in the outer shell?

Answer 4

Electrons

Question 5

What does the period number tell us?

Answer 5

The number of shells of electrons

Question 6

Do the size of atoms increase or decrease across the periods?

Answer 6

Decrease

Question 7

Do the size of atoms increase or decrease down a group?

Answer 7

Increase

Question 8

Group 1 contains the most reactive metals. contain? What are they called?

Answer 8

Alkali metals

Question 9

How many electrons are in each outer shell in each of group 1?

Answer 9

1

Question 10

Group 1 is descending. Do the metals become more or less reactive?

Answer 10

More reactive

Question 11

Group VII (7) are the most reactive non-metals. What are they known as?

Answer 11

Halogens

Question 12

How many electrons are in the outer shells of Group VII?

Answer 12

7

Question 13

As Group VII descends, do the Halogens become more or less reactive?

Answer 13

Less reactive

Question 14

Group 0 (8) are all unreactive non-metals.What are they known as?

Answer 14

Noble or Inert Gases

Question 15

Why do Group 0 (8) not react?

Answer 15

Because they have a full outer shell.

Question 16

What are the block of metals between Group 2 and 3 called?

Answer 16

The transition metals

Question 17

What do the transition metals form?

Answer 17

They form coloured compounds and are unreactive

Question 18

Is hydrogen a metal or a non-metal?

Answer 18

Non-metal

Question 19

There are limitations to the periodic table. Name 2 semi-metals

Answer 19

Silicon (Si) and Germanium (Ge)

Question 20

What are the properties of semi-metals?

Answer 20

They show properties of meatals and non-metals.
Conducts small amounts of electricity.

Question 21

What is carbon (graphite) ?

Answer 21

A non-metal which conducts electricity

Question 22

What is an Exothermic Reaction?

Answer 22

Gives out heat to its surroundings and the temperature rises.

Question 23

What is an endothermic reaction?

Answer 23

Takes in heat from its surroundings and the temperature falls.