2. Water Is Known As a (Polar/Nonpolar) Molecule

Chapter 19

Study Guide

1.  The properties of a compound are the (same/different) as the elements that made them.

2.  Water is known as a (polar/nonpolar) molecule.

3.  Particles formed from the covalent bonding are called (ions/molecules).

4.  Molecules are (neutral/ionic).

5.  A term that means without water is (hydrous/ anhydrous).

6.  When a atom gains and loses an electron, they are called (ions/molecules)

7.  The formula for ammonium ( SO / PO ).

8.  An atom is chemically (stable / unstable) when its outer energy level contains all the electrons it can hold.

9.  HCl – hydrochloric acid is known as (polar covalent / nonpolar covalent).

10. An element’s (oxidation number/ group number) indicates how many electrons the element must gain, lose, or share to become stable.

11. The number of each type of atom in a compound is shown by numbers called (subscripts/superscripts)

12. A group of covalently bonded atoms that acts together as one charged atoms is called (molecule/polyatomic ion)

13. The elements that make up a compound are called (symbols/ formulas)

14. Bonds that occur when atoms share electrons are called (ionic/covalent)

15. The (atomic number / oxidation number) tells you how many electrons an atom must gain, lose or share to become stable.

16. The sum of the oxidation number in a neutral compound is always (positive/ zero).

17. The oxidation number of an atom is shown with a ( subscript/superscript)

18. Understand Hydrate –

19. How many electrons do you need to become stable? (3/8).

20. What kind of chemical bond is formed when an equal exchange of electrons? (ionic/covalent)

21. How many atoms in the formula: Ca(ClO ) (6/9).

22. How many hydrogen atoms? NH CH OH ______

23. What is the name of NaCl?

24. Why do noble gases not form compounds?

25. What is the name of LiCl?

26. What is the ending for nitrate?

27. What is the name with the ending of SO

28. Write the formula for magnesium oxide.

29. Explain what a chemical bond is.

30. Which group is the most stable?

31. What type of bond is ionic?

32. What is the formula for calcium oxide?

33. What is the formula for magnesium chloride?