1. THE TEST THE TEST THE TEST One Day More

2. Congratulations to our BUFFS Deon, Maurice, and Darius. Dreams are a very sensitive thing. You whisper and they collapse. Tread softly with patience, and you will feel, dreams touch you as they pass.

3. Which of the following represents a chemical change? Low pH A gas is formed Color A substance is dissolved

4. Glucose has the formula C6H12O6. Glucose is a …. Mixture Element Compound Gas

5. Which of the following elements has the smallest atomic radius? Sulfur Chlorine Aluminum Sodium

6. Which is the ground state electron configuration for SCANDIUM (Sc #21) [Ar] 4s 2 3p 1 [Ar] 4s 2 4p 1 [Ar] 4s 2 3d 1

7. What is the Charge of Chromium in the formula Cr 2 O 3 ? Cr 2 O 3 Cr 3+

8. Which Element combines with Chlorine in order to form an ionic Bond? Lithium Carbon Phosphorus Bromine

9. Compounds that are composed of Ions…… Are molecular Are Crystalline solids at room temperature Two or more metallic elements All of the above

10. The Cation Fe 3+ is formed when…. Iron loses 2 electrons Zinc loses 2 electrons Iron loses 3 electrons Iron gains 3 electrons

11. When a transitional metal has more than one possible charge, that charge is indicated by…. EXAMPLE Iron (II) Oxide FeO Prefix Suffix Roman Numeral following the metal’s name Superscript after the name

12. Metals are good conductors because they….. Form Lattices Contain Positive Ions Contain mobile Valence Electrons Form Ionic bonds

13. Which of the following does not exist as a diatomic molecule? Diatomic means ______ atoms I (Iodine) F (Fluorine) H (Hydrogen) He (Helium)

14. Which is NOT covalent? Covalent bonds are between ____________ And ionics are between______and _______. SCl 2 KCl HCl S 2 Cl 2

15. Which diatomic molecule has a triple covalent bond? N 2 Br 2 H 2 O 2

16. In sea of electrons Electrons are stationary Electrons are bonded Some are mobile, some are not Mobile electrons are shared by all atoms

17. The Dot structure of HCl

18. The Line Structure of Water H 2 0

19. Atoms share electrons in order to acquire the electron configuration of ….(meaning, they try to be like) Alkali metals Alkaline earth metals Halogens Noble gases

20. How many double covalent bonds are there in C0 2 12341234

21. Shape of NH 3 Trigonal Pyrimidal

22. Shape of CH 4 Tetrahedral

23. Which of the following is a polar covalent bond H 2 O MgCl 2 CaO HF

24. What type of bond would you expect in LiF Ionic Polar Covalent Nonpolar Covalent None of the above

25. In a binary molecular compound, the number of atoms are indicated by the… Roman Numberal Superscripts Prefixes Suffixes

26. What is the formula for Sulfuric Acid HSO 4 H 2 S 2 H 2 SO 4 H 2 S

27. What is the formula for Aluminum Oxide? Al 2 0 3

28. Carbon Tetrachloride CCl 4 Tetrahedral

29. Group 6A (Group 16) has how many valence electrons? 24682468

30. Dot configuration for CO 2

31. Which is the most electronegative element? SeleniumNeon Phosphorus Chlorine