1. Semester Exam Review
2015

2. What is the mass number of carbon-14. A. 6 B. 7 C. 14 D
What is the mass number of carbon-14? A. 6 B. 7 C. 14 D. 12 How many electrons does silicon-29 have? A. 29 B. 14 C. 15 D. 16

3. Each hydrogen atom has the same A. Atomic number. B. Mass number. C
Each hydrogen atom has the same A. Atomic number. B. Mass number. C. Number of neutrons.

4. What element is represented. A. C B. He C. Be D
What element is represented? A. C B. He C. Be D. O A chemical bond resulting between cations and anions is A. Covalent B. Ionic C. Metallic

5. Which scientist would have used the model above to illustrate his conclusions about the atom?
A. Bohr B. Rutherford C.Thomson d. Dalton
Which elements lose varying amount of electrons?
A. All metals
B. Nonmetals
C. Transition metals
D. Noble Gases

6. Chemists apply VSEPR to determine A. shapes of molecules B
Chemists apply VSEPR to determine A. shapes of molecules B. metallic bonding C. traits of semi-conductors. D. Dalton’s theories Which element could be found in a covalent bond? A. metal B. nonmetal C. metalloid D. noble gas

7. This experiment determined that (Choose two answers) A
This experiment determined that (Choose two answers) A. Atoms are negative B. Atoms have a positive, small nucleus C. Atoms are indivisible D. Atoms are mostly empty space E. Atoms have many electrons

8. What is the overall charge of any ionic compound. A. positive B
What is the overall charge of any ionic compound? A. positive B. negative C. neutral How many valence electrons are in CH4? A. 2 B. 4 C. 6 D. 8

9. To balance chemical equation, adjust the A. formula subscipts B
To balance chemical equation, adjust the A. formula subscipts B. number of products C. coefficients D. charges K2S is named A. Potassium (I) sulfide B. Potassium (II) sulfide C. Dipotassium monosulfide D. Potassium sulfide

10. What is the formula for tetraphosphorus decoxide. A. P3O9 B. P4O10 C
What is the formula for tetraphosphorus decoxide? A. P3O9 B. P4O10 C. P4O9 D. P3O6 K2S is named A. Potassium (I) sulfide B. Potassium (II) sulfide C. Dipotassium monosulfide D. Potassium sulfide

11. HNO2 is named… A. hydronitric acid B. nitric acid C. nitrous acid D
HNO2 is named… A. hydronitric acid B. nitric acid C. nitrous acid D. hydrogen nitrate What is the shape of the water molecule? A. Bent (angular) B. Tetrahedral C. Linear D. Trigonal Pyramidal

12. What is the electron configuration for iron. a
What is the electron configuration for iron? a. 1s2 2s2 2p6 3s2 3p6 4s2 3d6 b. 1s2 2s2 2p6 3s2 3p6 4s2 4d6 c. 1s2 2s2 2p6 3s2 3p6 4s2 3d4 d. 1s2 2s2 2p6 3s2 3p6 4s2 4d4 The electron configuration for an element is 1s2 2s2 2p2. How many total electrons does this element have? a. 5 b. 6 c. 10 d. 11

13. How does the atom form a complete octet. a
How does the atom form a complete octet? a. Gain 1 more valence electron. b. Remove 1 valence electron. c. Remove 7 valence electrons. d. The element already has a complete octet. Which of the following is malleable? a. O b. C c. Cu d. Si

14. How many valence electrons does chlorine have?
A. 2 B. 4 C. 7 D. 8
How many valence electrons does Sr have?
A. 1 B. 2 C. 7 D. 8

15. What is the atomic number of 23892U?
a b c d. 146
A student makes a list of some observable properties of a substance.
Students’ List of Properties
1) silver in color
2) shiny
3) conducts electricity
4) forms a compound with sulfur
Which of the student’s listed properties is a chemical property of the substance?
a. 1 b c. 3 d. 4

16. A large piece of pure sulfur was found to have the following properties:
Color – yellow
Density – 2.0 g/cm3
Mass- 20 g
Lenth – 5 cm
Which properties would remain the same if the piece of sulfur would be cut in four different sizes?
a. color and density c. mass and length
b. color and mass d. density and length

17. Elements to the right of the zig-zag line are … A. Metals B
Elements to the right of the zig-zag line are … A. Metals B. Nonmetals C. Metalloids D. Radioactive elements F and Cl are… A. Halogens B. Noble gases C. Transition metals D. Solids

18. Which element will lose electrons easiest. A. Na B. Al C. S D
Which element will lose electrons easiest? A. Na B. Al C. S D. Ne Ar and Kr are… A. Halogens B. Alkali Metals C. Transition metals D. Noble Gases

19. Which ion symbol is correct? A. Li-1 B. Ba+2 C. Al-3 D. Cl+1
Which of the following describes how calcium forms an ion?
a. lose two electrons forming a +2 charge
b. gain two electrons forming a +2 charge
c. lose one electron forming a -2 charge
d. gain one electron forming a -2 charge

20. How many valence electrons are in the above orbital notation for oxygen? a. 2 b. 4 c. 6 d. 8 What is the most reactive family of metals? A. Noble Gases B. Halogens C. Transition Metals D. Alkali Metals

21. Which of the following is an acid. A. HI b. C9H20 c. OH d
Which of the following is an acid? A. HI b. C9H20 c. OH d. CsCN A covalent compound is composed of a _?_ and a _?_. A. metal and nonmetal B. nonmetal and nonmetal C. cation and anion D. metal and metal

22. Which coefficients correctly balance the equation
Na + Cl2  NaCl
a. 2, 1, 2 c. 1, 2, 1
b. 1, 2, 3 d. 1, 1, 1

23. In a crystal, each cation is surrounded by A. Cations b. Anions c
In a crystal, each cation is surrounded by A. Cations b. Anions c. Molecules What is the formula for sulfur dichloride? A. SCl2 B. S1Cl2 C. S(Cl)2 D. SCl

24. Which of the following is the symbol for an alpha particle. A. 11H B
Which of the following is the symbol for an alpha particle? A. 11H B. 10n C. 0-1e D. 42He Gases … A. Have low boiling points. B. Are radioactive. C. Are solids at room temperature. D. Are unreactive.

25. What is the name of Fe+3. A. Iron ion B. Iron (III) ion C. Ironide D
What is the name of Fe+3? A. Iron ion B. Iron (III) ion C. Ironide D. Iron (+3) ion