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1. Heliopolis Modern Language Schools
The American Division
Academic Year: 2023/2024

2. Compare between:
Anion: is the ion that loses an electron Cation: is the ion that gains electron
Ionic bond : is the type of bond where
an electron is transferred from an
atom to another
Covalent: is the bond where atoms
share the electrons
Proton: is positively
charged
Electron: is negatively
charged
Neutrons: are neutrally
charged

3. Naming the following compounds
1: KCL Potassium chloride
2:Li2O Lithium oxide
3:CaBr2 Calcium bromide
4:HNO2 Hydrogen nitride
5:- LiH Lithium hydride
6:HI Hydrogen iodide
7:MgBr2 Magnesium bromide
8:K2O Potassium oxide

4. 9: H3P Tri hydrogen phosphide
10:SrI2 Strontium iodide
11:ZnO Zinc oxide
12:HCl Hydro chloric acid
13:SrS Strontium sulfite
14:CaS Calcium sulfite
15:MgO Magnesium oxide
16:Ag2S Silver sulfate

5. 17:H2S Di hydrogen sulfite
18:ZnF2 Zinc di fluoride
19:AlBr3 Aluminum tri bromide
20:H2SO3 Di Hydrogen sulfite
21:Ag3N Silver nitride
22:- Ag2S Silver sulfide
23:NiBr2 Nickel bromide
24:H3PO3 Phosphorous acid

6. 25: - FeO Iron monoxide
26:HBr Hydrogen bromide
27:Fe2O3 Iron II tri oxide
28:SnCl4 Tin tetra chloride
29:- HClO3 Chloric Acid
30:- PbCl4 Lead 2+ tetra chloride
31:- H2CO3 Hydrogen carbonate
32:SnBr2 Tin di bromide

7. 33:CrP Chromium phosphide
34:FeF2 Iron di fluoride
35:H2CrO4 Hydrogen chromate
36:AuCl3 Gold chloride
37:SnO2 Tin di oxide
38:H2SO4 Sulfuric acid
39:SnCl2 Tin di chloride
40:HNO3 Nitric acid
41:ZnF2 Zinc di fluoride
42:- Ni2O3 Di nickel tri oxide

8. 43:BaO Barium oxide
44:H3PO Tri hydrogen phosphate
45:HgF2 Mercury fi fluoride
46:HF Hydrogen fluoride
47:PbO Lead oxide
48:HC2H3O Acetic acid
49:CaH2 Calcium di Hydride
50: FeI3 Iron II tri iodide

9. 1- sodium bromide NaBr2
2- calcium oxide CaO
3- silver chloride AgCl
4- Hydrochloric Acid HCl
5- silver oxide AgO
6- aluminum nitride AlN
7- Chromic Acid HCrO4
8- zinc iodide 1. ZnI
Name formulas

10. 9- phosphorus pentachloride PCl5
10- Hydrofluoric Acid HFl
11- carbon monoxide CO
12- Phosphous Acid/Phosphorous Acid HPO3
13- carbon tetrachloride CCl4
14- Acetic Acid HC2H3O2
15- nitrogen trifluoride NF3
16- sulfur hexafluoride SFl6
17- Sulfous Acid/Sulfurous Acid HSO3
18- dinitrogen trioxide N2O3

11. 19- lead (II) iodide Pb(II)I
20- mercury (II) bromide Hg(II)Br
21- lead (II) sulfide Pb(III)I
22- tin (IV) iodide Sn(II)I
23- chromium (III) oxide Cr(III)O
24- tin (II) fluoride Sn(II)F
25- mercury (II) sulfide Hg(II)S
26- Phosphic Acid/Phosphoric Acid 1. HP
27- lead (IV) chloride 1. Pb(IIII)Cl
28- Hydrosulfic Acid/Hydrosulfuric Acid 1. HSO4

12. 29- nickel (II) phosphide NiP
30- Sulfic Acid/Sulfuric Acid
31- gold (III) bromide AgBr2
32- Hydrophosphic Acid/Hydrophosphoric Acid HPO
33- cobalt (II) iodide Co(II)I
34- copper (I) nitride Cu(I)N
35- Nitric Acid HNO3
36- iron (III) phosphide Fe(III)P
37- chromium (II) nitride Cr(II)N
38- Chloric Acid HClO3

13. 39- iron (II) chloride Fe(II)Cl
40- Hydrobromic Acid HBr2
41- tin (II) fluoride Sn(II)F
42- Nitrous Acid HNO2
43- copper (II) bromide Cu(II)Br2
44- Oxalic Acid
45- magnesium nitride MgN
46- calcium hydride CaH
47- Hyrdroiodic Acid 1. HIO
48- potassium phosphide 1. KP

14. 49- calcium fluoride CaF
50- Chlorous Acid HClO

15. Give the symbol and the number of protons
Lithium Li 3
Iron Fe 26
Oxygen O 16
Krypton Kr 36
Bromine Br 35
Copper Cu 29
Mercury Hg 80
Helium He 2

16. Give the symbol of and the number of electrons in a
neutral atom of
Uranium U 92
Boron B 5
Chlorine Cl 17
Iodine I 53
Xenon Xe 54

17. Name the element which has the following numbers of
particles
26 electrons 26 protons Iron
53 protons 74 neutrons Iodine
2 electrons (neutral atoms) Helium
20 protons Calcium
0 neutrons
86 electrons, 82 protons 125 neutrons