The Periodic Table

Question 1

What are elements?

Answer 1

An element is a substance that cannot be broken down into any other substance. Every element is made up of its own type of atom. This is why the chemical elements are all very different from each other.

Question 2

Who made the periodic table?

Answer 2

Dmitri Mendeleev

Question 3

What is a group in the periodic table?

Answer 3

A group is a column of elements in the periodic table

Question 4

What are periods in the periodic table?

Answer 4

A period in the periodic table is a row of chemical elements

Question 5

What are alkali metals?

Answer 5

Alkali metals are any of the elements: lithium, sodium, potassium, rubidium, caesium, and francium, occupying Group 1 of the periodic table.

Question 6

What are alkaline earth metals?

Answer 6

Alkaline earth metals are any of the elements beryllium, magnesium, calcium, strontium, barium, and radium, occupying Group 2 of the periodic table.

Question 7

What are halogens?

Answer 7

Halogens are any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group 7 of the periodic table.

Question 8

What are noble gases?

Answer 8

Noble gases are any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0 (8) of the periodic table.

Question 9

What are transition metals?

Answer 9

Transition metals have high melting points and densities, form coloured compounds and act as catalysts. They are located in the middle of the periodic table.

Question 10

Metal + acid =

Answer 10

metal + acid → salt + hydrogen

Question 11

Metal + water =

Answer 11

Metal + water = Hydroxide + Hydrogen

Question 12

Metal + Oxygen =

Answer 12

Metal + Oxygen = Metal Oxide

Question 13

Copper Sulphate + Iron

Answer 13

Iron Sulphate + Copper

Question 14

Lead Oxide + Magnesium

Answer 14

Magnesium Oxide + Lead

Question 15

What is a metal ore?

Answer 15

A metal compound within a rock is called an ORE

Question 16

How are metals extracted from ores?

Answer 16

The method used to extract a metal from its ore depends upon the reactivity of the metal: the oxides of very reactive metals, such as aluminium, form stable oxides and other compounds. A lot of energy is needed to reduce them to extract the metal.

Question 17

What is the reactivity series?

Answer 17

The reactivity series shows how reactive each metal is

Question 18

H =

Answer 18

H = Hydrogen

Question 19

He =

Answer 19

He = Helium

Question 20

Li =

Answer 20

Li = Lithium

Question 21

Be =

Answer 21

Be = Beryllium

Question 22

B =

Answer 22

B = Boron

Question 23

C =

Answer 23

C = Carbon

Question 24

N =

Answer 24

N = Nitrogen

Question 25

O =

Answer 25

O = Oxygen

Question 26

F =

Answer 26

F = Florine

Question 27

Ne =

Answer 27

Neon

Question 28

Na =

Answer 28

Na = Sodium

Question 29

Mg =

Answer 29

Mg = Magnesium

Question 30

Al =

Answer 30

Al = Aluminium

Question 31

Si =

Answer 31

Si = Silicon

Question 32

P =

Answer 32

P = Phosphorus

Question 33

S =

Answer 33

S = Sulphur

Question 34

Cl =

Answer 34

Cl = Chlorine

Question 35

Ar =

Answer 35

Ar = Argon

Question 36

K =

Answer 36

K = Potassium

Question 37

Ca =

Answer 37

Ca = Calcium

Question 38

An explanation of mixtures

Answer 38

Two or more elements are combined in a way that involves no chemical reactions.

Question 39

Why we may separate mixtures

Answer 39

We may wish it so we can get pure water from water

Question 40

What is the product of a metal + Oxygen E.g. Magnesium + Oxygen -->

Answer 40

A metal oxide. E.g. magnesium oxide

Question 41

The vertical columns in the periodic table are known as...

Answer 41

Groups

Question 42

The chemical symbol for Potassium is...

Answer 42

K

Question 43

The alkali metals have____ electrons in their outermost shell

Answer 43

1 electron

Question 44

Order the following elements in terms of INCREASING reactivity... Potassium,Sodium, Rubidium, Lithium

Answer 44

Lithium Sodium Potassium Rubidium

Question 45

Complete the displacement reaction below: Chlorine + Potassium Bromide->__+__

Answer 45

Chlorine + Potassium Bromide --> Potassium chloride + Bromine

Question 46

Chlorine is in group 8 of the periodic table. Group 7 elements are also known as...

Answer 46

The Halogens