C1.1 Atoms topic

Question 1

There are about ___ different elements and more than _____ compounds

Answer 1

100

1000

Question 2

What are the parts of an atom ?

Answer 2

There is a small central nucleus (made up of sub atomic particles - protons and neutrons ) and there is electrons in the shell around it

Question 3

What is the charges of a

Proton ?

Neutron ?

Electron ?

Answer 3

Proton - +1

Neutron - 0

Electron - -1

Question 4

The number of electrons in an atom is equal to the number of _______ in the _______.

Answer 4

Protons

Nucleus

Question 5

______ have no overall electrical charge

Answer 5

Atoms

Question 6

All atoms of a particular element have the same number of _______ . Atoms of different elements have different numbers of _______ .

Answer 6

Protons

Protons

Question 7

What is the relative atomic mass (mass number ) the sum off ?

(The top number in the element thing )

Answer 7

The sum of protons and neutrons in an atom

Question 8

The atomic number (the bottom number ) is also the ______ number

Answer 8

Proton

Question 9

Since an atom had equal numbers of protons …..

Answer 9

… The charges cancel out

Question 10

How do u balance an equation ?

Answer 10

Look on note sheet but …

See what number of each element is on each side of the equation and make each side equal the same

Question 11

What is special about elements with the same number of electrons in their highest energy level ( outer shell ) ?

Answer 11

It means they have similar chemical properties and they are in the same group

Question 12

What are the elements in group 8/0 called ?

Answer 12

The Nobel gasses

Question 13

Why are Nobel gasses unreactive ?

Answer 13

Because they have full outer electron shells ( their atoms are stable arrangements of electrons )

Question 14

Covalent bonding happens between ?

Answer 14

A non metal and a non metal

Question 15

What does covalent bonding involve?

Answer 15

Sharing of electrons

Question 16

Oxygen produces simple m_______ c_______

Or

Giant c_______
Structures like D _______

Answer 16

Molecular compounds

Covalent
Diamond

Question 17

What happens in covalent bonding ?

Answer 17

Both atoms want a full outer shell , so share an electron/ electrons so they both have a full outer shell

Question 18

What is special about the bonds in covalent bonding ?

Answer 18

They are very strong so difficult to break

Question 19

What is a molecule

Answer 19

2 or more atoms that have been chemically joined with covalent bonds

Question 20

What is an element

Answer 20

Contains only 1 type of atom

Question 21

Ionic bonding is between a ?

Answer 21

Metal and a non metal

Question 22

Ions can be ______ or ________

Answer 22

Positive or negative

Question 23

In ionic bonding it is the __________ of electrons and it is not to do with _______ .

Answer 23

Transfer

Molecules

Question 24

In ionic bonding they want a s______ , full _______ ____.

Answer 24

Stable full outer shell

Question 25

In ionic bonding if the atom looses an electron this means it becomes _____ charged

Answer 25

Positively

Question 26

In ionic bonding if an atom gains an electron , this means it becomes ______ charged .

Answer 26

Negatively

Question 27

What is an element

Answer 27

A substance which is made of only one sort of atom