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Term: _______________________ 1 2 3 4
Define (in your own words): ____________________________________________________________________________________________________________________________________________________________________________
Draw:
covalent bond:covalent bond: 1 2 3 4
• (define in your own words)
• Draw your picture:
Understanding Level
ion:
•an atom or group of combined atoms that has a charge because of the loss or gain of electrons.
ionic bond:
•the strong attractive force between ions of opposite charge – electrons are transferred. Usually occurs between a metal and a nonmetal.
ionic bond:ionic bond: 1 2 3 4
• (define in your own words)
• Draw your picture:
Understanding Level
polyatomic ion:polyatomic ion: 1 2 3 4
• (define in your own words)
• Draw your picture:
Understanding Level
valence electron:valence electron: 1 2 3 4
• (define in your own words)
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Understanding Level
.According to this information, what is the chemical formula for aluminum sulfate? (Apr'04 11th - 23)
A. AlSO4
B. Al2(SO4)3
C. Al3(SO4)2
D. Al6SO4
Al 3+ SO4 2-
Calcium (Ca2+) + Chloride (Cl-) Calcium chloride
The chemical formula for calcium chloride is _____. (Apr'04 11th - 38)
A. Ca2Cl
B. CaCl
C. CaCl2
D. Ca2Cl3
Alpha particles are one type of radioactivity. These particles have a nucleus of two protons and two neutrons but have no orbital electrons. Based on this information, it can be inferred that alpha particles are positive ions of the element _____. (Apr'06 11th - 42)
A. actinium
B. curium
C. radium
D. helium
A certain atom has a nucleus containing six protons and eight neutrons and has six electrons orbiting the nucleus. This atom is a form of the element _____. (Apr'06 11th - 53)
A. silicon
B. carbon
C. magnesium
D. calcium
Silver bromide is a type of halide. Halogens or elements from group 17 in the periodic table are necessary to form halide compounds. Which of the following is the correct formula for silver bromide? (cloned)
A. SiBr4
B. Si7Br
C. Ag7Br
D. AgBr
According to the periodic table, which of these elements will form an ion with a –2 charge? (Jul'06 11th -34)
A. S
B. Mg
C. F
D. Rb
Calcium ions play an important role in the function of neurons in the brain. Elements that are chemically similar to calcium can interfere with the function of neurons. Which of the following is most likely to imitate calcium’s role in the function of neurons? (Oct'05 11th -24)
A. Sodium
B. Potassium
C. Strontium
D. Rubidium
. Ca 2+ CO3 2-
Limestone is a sedimentary rock consisting mostly of calcium carbonate. According to the information above, what is the correct formula for calcium carbonate? (cloned) A. Ca2(CO3)2
B. CaCO3
C. Ca3CO2
D. Ca2CO3
.When ammonium nitrate is heated to a high temperature, it explosively breaks down into dinitrogen monoxide and water. What is the formula for dinitrogen monoxide? (cloned)
A. NOB. N2OC. NO2
D. N2O5
According to the periodic table, which element most readily accepts electrons? (Spr'03 11th -23) A. FluorineB. NitrogenC. ArsenicD. Aluminum
. The bonding characteristics of oxygen are most similar to the bonding characteristics of _____. (Apr'06 11th -9 and Fall'05 11th -37) A. hydrogenB. siliconC. heliumD. sulfur
Which of these elements is most likely to donate one electron? (Apr'06 11th - 38) A. BeB. CsC. RnD. He
.The model above shows how an unidentified element, X, forms covalent bonds with oxygen. In which group on the periodic table does Element X most likely belong? A. Group 6B. Group 12C. Group 14D. Group 18
In which model of the periodic table does the shaded area show the location of elements that require the least energy to lose one electron? (Feb'06 11th - 21)
A C
B D
.The ionic compounds that result from combining Group 2 and Group 16 elements have a 1:1 ratio because _____. (Feb'06 11th -45)
A. Group 2 elements are electrically neutralB. Group 2 elements have two valence electronsC. Group 2 elements contain neutrons in the nucleusD. Group 2 contains more elements than other groups