Chemistry Year 9 Flashcards

1

How many electrons can the first electron shell hold?

2
4
8
0

2

Which element has one electron in its outer shell?

calcium
cobalt
neon
sodium

3

D represents:

valence shells
electron shells
electrons
nucleus shells

4

Which of the following isn't an element:

water
gold
oxygen
carbon

5

Elements are pure chemicals that contain only one type of:

molecule
atom
group
compound

6

How many groups are there in the Periodic Table?

12
24
6
18

7

Which element is not a metal?

magnesium
sulphur
calcium
lithium

8

The atomic number tells you:

number of valence electrons
atomic mass
number of protons
number of nuclei

9

What element reacts with sodium to form a salt?

nitrogen
chlorine
sulphur
copper

10

What is the nucleus made up of?

electrons and protons
protons and ions
neutrons and electrons
neutrons and protons

11

Ionic bonds form between:

carbon and oxygen
two non-metals
a metal and non-metal
two metals

12

The atom in the diagram is of which element?

nitrogen
carbon
magnesium
helium

13

E represents:

neutrons
nucleus
protons
electrons

14

How many elements are there in group 1?

12
10
5
7

15

Which group of elements forms 2+ ions?

nobel gases
lanthanides
alkaline metals
halogens

Chemistry Year 9

Questions 15

Chemistry Year 9

Questions 15