elements join to form compounds

1. 9WI’s
COMPOUNDS

2. Copper and Chlorine
Name Symbol Atomic Atomic Metal or
number mass Non-Metal
Copper Cu 29 63.546 Metal
Chlorine Cl 17 35.454 Non-metal
(Halogen)
Copper + chlorine=Copper (II) chloride, CuCl2
Cl Cu Cl
This is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate. Copper (II)
chloride is used to make fungicides. It is also used to make organic compounds. Copper (ll) chloride is a
compound because it has two other different elements combined together, which are Zinc and Oxygen.

3. Hydrogen & Nitrogen
H H N N
It forms Ammonia, which is
possibly NH3
H N H
H

4. Iron(II) oxide, also known as ferrous oxide or
informally as iron monoxide, is one of the iron
oxides. It is a black-colored powder with the
chemical formula FeO. It consists of the
chemical element iron in the oxidation state of
2 bonded to oxygen
2Fe + O → 2FeO 2

5. Nitrogen and hydrogen
Hydrogen:
Nitrogen:
Name: Hydrogen
Name: Nitrogen
Symbol: H
Symbol: N
Atomic Number: 1
Atomic Number: 7
Atomic Mass: 1
Atomic Mass: 14
Melting Point: -259.14 °C
Melting Point: -209.9 °C
Boiling Point: -252.87 °C
Boiling Point: -195.8 °C
Number of
Number of
Protons/Electrons: 1
Protons/Electrons: 7
Number of Neutrons: 0
Number of Neutrons: 7
Classification: non-metal
Classification: non-metal
Density @ 293 K: 0.08988
Density @ 293 K: 1.2506
g/cm3
g/cm3
N + H
= NH3
NITROGEN + HYDROGEN= AMMONIA NH3
N = 1 atom H = 3 atoms = NH3

6. 1 nitrogen atom and 3
hydrogen atoms makes
Ammonia. (NH3) Ammonia is a
colourless gas with a sharp,
MAKES
penetrating odour. Its boiling
point is −33.35 °C (−28.03 °F),
and its freezing point is −77.7
AMMONIA!
°C . It can be handled as a
liquid in thermally insulated Hydrogen
containers in the laboratory.
(The heat of vaporization of a
substance is the number of
kilojoules needed to vaporize Nitrogen
one mole of the substance
with no change in
temperature.) Hydrogen
Hydrogen

7. Nitrogen & Hydrogen
Hydrogen 4th most Abundant
Colourless Nitrogen
Atomic
Atomic Number 7
Number1 Gas
Atomic Abundant Colourless Liquid, Gas or
Weight 1.00 Atomic Mass Solid
97 u 14.00674 u
Non Toxic USES
•PLANT GROWTH – LIQUID FERTILISER
•METAL TREATING
•NEUTRILIZING CRUDE OIL
•WATER & WASTE WATER TREATMENT
•PULPING WOOD
•CURING AGENT LEATHER
•COMMERCIAL & HOUSEHOLD CLEANERS
The final reaction is between Nitrogen (N2) and Hydrogen (H2) to give
Ammonia (NH3):
N2 + 3H2 --> 2NH3
4/06/2012 Kaleb Bowles

8. Nitrogen hydrogen
Nitrogen has 7 protons and neutrons.
The atomic mass is 14 protons neutrons and electrons.
Hydrogen's atomic number is 1 and the atomic mass is 1.
H
N H
H
Nitrogen and hydrogen make AMMONIA NH 3

9. Zinc and Oxygen
Zinc
Zinc oxygen
Symbol- Zn
Atomic number- 30
Atomic mass- 65
Oxygen
Symbol- O O
Atomic number- 8
Atomic mass- 16 Zn

10. Silicon and Nitrogen= Silicon Nitride
Silicon : Nitrogen:
• Symbol: Si
Name: Nitrogen
• Atomic Mass: 28
Symbol: N
• Electrons: 14 N
Atomic Number: 7
• Neutrons: 14 Atomic Mass: 14.00674
• Protons: 14 Melting Point: -209.9 °C (63.250008 K, -
• State: Solid Si 345.81998 °F)
• Density: 2.3 Boiling Point: -195.8 °C (77.35 K, -320.44 °F)
• Atomic Number: 14 Number of Protons/Electrons: 7
• Melting point: 1410 Number of Neutrons: 7
• Boiling Point: 2360 Classification: Non-metal
Crystal Structure: Hexagonal
N
Density @ 293 K: 1.2506 g/cm3
Si Colour: colourless

11. Ag Br
Ag
Br

12. Zinc and oxygen = Zinc oxide
Name Symbol Atomic mass Atomic
number
Zinc Zn 65.39g 30
Oxygen O 16g 8
o Zn
Oxygen Zinc
O
Zn
Zinc oxide

13. ZINC OXYGEN
Atomic Number: 30 Atomic Number: 8
Atomic Mass: 65.39 amu Atomic Mass: 15.9994
Symbol: Zn Symbol: O
Number of Protons/Electrons: 30 Number of Protons/Electrons: 8
Number of Neutrons: 35 Zn
Number of Electrons: 8
Atomic Structure
O
Zinc and Oxygen combined
together make Zinc Oxide. Zn

14. Zinc & Oxygen
 The symbol for zinc is Zn  The symbol for Oxygen
 The atomic number is 30 is O
 The Atomic Mass is 65.39  The Atomic number is 8
 The atomic mass is 16
Zn O
Zn
O