My Chemistry Puzzle

4. is numerically equal to its molar mass, so a compound’s molecular formula can also be found given the compound’s empirical formula and its molar mass.
5. is a certain type of molecular compound.
6. involves combining the names of the compound’s positive and negative ions.
10. can be written given the identities of the compound’s ions.
12. can be assigned to atoms in order to keep track of electron. distributions in molecular as well as ionic compounds.
15. has an oxidation number of +1 in all compounds containing elements that are more electronegative than it but has an oxidation number of –1 with metals.
16. are acids that consist of two elements,usually hydrogen and a halogen.
17. are acids that contain hydrogen, oxygen,and a third element (usually a nonmetal).
20. An ionic compound composed of a cation and the anion from an acid.
22. consists of the symbols for the elements combined in a compound.
24. is usually the compound’s empirical formula for ionic compounds.
26. polyatomic ions that contain oxygen.
27. To distinguish the ions formed by such elements.
28. Ions formed from a single atom.
29. showing the smallest whole-number mole ratio of the different atoms in the compound.

1. Shows how the atoms in each ion are bonded together.
2. The mass of a water molecule.
3. is the sum of the average atomic masses of all atoms represented in its formula.
7. has an oxidation number of –1 in all its compounds because it is the most electronegative element.
8. is numerically equal to its formula mass.
9. is often useful to know the percentage by mass of a particular element in a chemical compound.
11. is first in the name because it is less electronegative than fluorine.
12. usually has an oxidation number of –2.
13. the total numbers of positive charges and negative charges must be equal.
14. indicates the relative number of atoms of each kind in a chemical compound.
18. a molecule of the compound contains two arsenic atoms.
19. are bound together in a group and carry a characteristic charge.
21. is the actual formula of a molecular compound.
23. compounds composed of two elements.
25. are identified simply by the element’s name.