NameStudy Guide 1- Chemistry (Units 5-7)
01/10/2014
*Use all of your guided notes, worksheets, and vocabulary to answer the following questions*
1 Draw the Lewis Dot diagram for GaP, draw the arrows, and redraw the formula using circles. Lastly, identify this bond
as ionic or covalent.
2 Draw the Lewis dot diagram for Iodine and Iodine, circle the bonding pairs, and redraw the formula using dash lines to
represent the bonding pairs. Lastly, identify this bond as ionic or covalent.
3 What is the formula for magnesium and carbonate ions? (Hint- use the cross-down method once you know the
oxidation numbers)(Hint- use your polyatomic sheet)
Mg2(CO3)2
4 What is the name of the molecular substance Be(NO2)? (Hint- use your polyatomic sheet) Beryllium nitrite
5 What is the name of the compound whose formula is Li2(SO3)? (Hint- use your polyatomic sheet) DiLithium sulfite
6 What category (metal, nonmetal, metalloids) of elements does an ionic bond use? Metal + nonmetal
7 What category of elements does a covalent bond use? Nometal + nonmetal
8 What is the new name for an ionic bond between Calcium and Chlorine? Calcium chloride
9 What state of matter are ionic compounds in at room temperature? Crystalline solid
10 List the three groups that are cations. Groups 1, 2, 13 (metals)
11 List the three groups that are anions. Groups 15, 16, 17 (nonmetals)
12 How many atoms of H are in this molecular formula for sugar- C12H22O11? H-22
13 What is the ionic formula for Magnesium Iodide? (Hint- find their oxidation # and use the cross-down method)
MgI2
14 How many valence electrons does Na have? 1
15 Describe where you would find the metals (left), metalloids (staircase), and nonmetals (right) on a periodic table.
16 List the properties of a metal: has luster, conducts electricity
17 List the properties of a nonmetal: no luster, brittle, does not conduct electricity
18 You find a new element and find that it has luster, is malleable, and does conduct electricity. What would be the best
category for this new element? metal
Study Guide 2- Chemistry (Units 3-4)
01/10/2014
19 Label the picture with the names of the three different types of radiation.
Alpha is the 4 circles (with 2 protons), Beta was electron, Gamma no diagram
20 Which type of radiation kills people?
gamma
21 Using the picture below- identify this type of nuclear reaction. What do people use this type of reaction for?
Fission
-atomic bombs
-power plants
22 Using the picture below identify this type of nuclear reaction. What do people use this type of reaction for?
Fusion
-sun’s energy
23 Using the graph on the right- explain the curve of the line below. Initial rapid, then slows
24 Using the graph on the right- how many half-lives does it take to get to 1.25g of Carbon-14?3
25 Using the graph on the right- how much of the Carbon-14 remains (%) after 1 half-life?
50%
26 Draw a half-life table and calculate. Radioactive Iodine has a half-life of 8 days. How much of a 200 gram sample will
be left after 24 days?
25 grams
27 How do the isotopes Nitrogen-1 and Nitrogen-2 differ?
Nitrogen
28 Use the Li figure to the right. What does two things does the 3 represent? Atomic #, protons, electrons
29 Use the Li figure to the right. What does the 6.941 represent? Avg. atomic mass
30 How many neutrons does Lithium have? 7-3= 4
31 Is Lithium a cation or an anion? Why? Cation (metal, Group 1)
32 What is an element’s identity based on? (Hint- what always stays the same?) atomic #