Activate 1 - Chapter C2 - Elements, Atoms, Compounds, Mixtures Flashcards
1
Q
Atom
A
The smallest part of an element that can exist.
2
Q
Compound
A
A substance made up of atoms of two or more elements, strongly joined together.
3
Q
Molecule
A
A group of two ore more atoms, strongly joined together.
4
Q
- H
Clue: Atomic No. 1
A
Hydrogen
5
Q
- He
Clue: Atomic No. 4
A
Helium
6
Q
- Li
Clue: Atomic No. 7
A
Lithium
7
Q
- Be
Clue: Atomic No. 9
A
Beryllium
8
Q
B
A
Boron
9
Q
C
A
Carbon
10
Q
N
A
Nitrogen
11
Q
O
A
Oxygen
12
Q
F
A
Fluorine
13
Q
Ne
A
Neon
14
Q
Na
A
Sodium
15
Q
Mg
A
Magnesium
16
Q
Al
A
Aluminium
17
Q
S
A
Silicon
18
Q
Phosphorus
A
P
19
Q
Sulphur
A
S
20
Q
Chlorine
A
Cl
21
Q
Argon
A
Ar
22
Q
Potassium
A
K
23
Q
Ca
A
Cacium
24
Q
Salt
A
NaCl
Sodium + Chlorine
25
Water
H O 2 Hydrogen + Oxygen
| 2
26
Carbon Dioxide
CO
2
Carbon + 2 Oxygen
27
Hydrochloric Acid
HCl
Hydrogen + Chlorine
28
Sulphuric Acid
H SO
2 4
2 Hydrogen + Sulphur + Oxygen
29
Methane
CH
4
Carbon + 4 Hydrogen
30
Iron Sulphate
FeS
Iron + Sulphur
31
Periodic Table
The table with all the elements, in which elements with similar properties are grouped together.
32
Chemical Symbol
A one or two-letter code for an element that is used by scientists in all countries.
33
Chemical Formula
A formula that shows the relative number of atoms of each element in a compound
