1. The symbol for Potassium is ”K.”
2. Subscripts represent the number of atoms.
3. A compound with carbon in it is considered an organic compound.
Example: CH4 (methane)
4. In Al2(SO4)3 there are 12 oxygen atoms.
5. A combination of symbols that represent the composition of a compound is a Chemical formula.
6. An atom with an electric charge is called an ion.
7. Bicarbonate (HCO3)1-
8. Phosphate (PO4)3-
9. Ammonium (NH4)1+
10. The oxidation number of the Nitrate ion is -1.
11. Compounds composed of neutral particles are called molecular compound.
12. Oxygen is a diatomic molecule.
13. An ion with an oxidation number with 3+ can combine with 3 other ions, if each of these ions has an oxidation number of 1-.
14. H2 is a Diatomic molecule.
15. SO3 is a binary compound.
16. What is ZnS called? Zinc Sulfide
17. What is the formula for Lithium Nitrate- LiNO3
18. Cl-1 is a hypochlorite ion.
19. MgSO4 is called Magnesium Sulfate.
20. The oxidation number for Ammonium is 1+.
21. The charge on an individual atom is represented by the oxidation number(valence number.)
22. For the formula to be correct the addition of the charges in the compound must add up to zero.
23. Sodium Acetate isn’t a diatomic element.
24. A compound having six carbon atoms linked in a chain would be named using hex as the prefix.