Download 4-Chem Fun PRACT EXAM13.cwk (WP)

Conceptual Physics
Practice Exam
Chemistry Fundamentals
Name____________________________________
Period_______
Find the missing information for the following.
1.) Ca2 +
Number of protons =
20
Number of electrons =
________
Number of neutrons =
22
Atomic number =
________
Mass number =
________
Nuclear symbol =
Number of protons =
________
Number of electrons =
81
Number of neutrons =
________
Atomic number =
________
Mass number =
168
Nuclear symbol =
Number of protons =
________
Number of electrons =
________
Number of neutrons =
________
Atomic number =
80
Mass number =
192
Nuclear symbol =
Number of protons =
________
Number of electrons =
________
Number of neutrons =
29
Atomic number =
27
Mass number =
________
Nuclear symbol =
Number of protons =
________
Number of electrons =
________
Number of neutrons =
________
Atomic number =
________
Mass number =
________
Nuclear symbol =
2.) Po3+
3.) Hg
4.) Co1+
5.) Ag1-
96
Ag
47
Please count the ATOMS that are in the following compounds.
1.) 3 Hg2 O
2.) Ca 3(AsO3)2
3.) Fe3(PO4)2
4.) 2 Mg(OH)2
5.) Sn(SO4)2
Please list the PROTONS & ELECTRONS that are in the following elements.
1.) H-
2.) Mg2 +
3.) N3-
4.) Ca
5.) Al3+
Please use the NUCLEAR SYMBOL to find the following.
1.) 39 Ca
20
# of protons _______
# of neutrons ______
2.) 26 Mg
12
# of protons _______
# of neutrons ______
3.) 14 N
7
# of protons _______
# of neutrons ______
4.) 150
Os
76
# of protons _______
# of neutrons ______
5.) 109
Xe
54
# of protons _______
# of neutrons ______
Please construct a NUCLEAR SYMBOL from the following.
1.) An element with 15 PROTONS and 16 NEUTRONS.
2.) An element with 23 PROTONS and 23 NEUTRONS.
3.) An element with 18 PROTONS and a MASS NUMBER of 38.
4.) Calcium with a mass number of 41.
5.) Iron with 27 neutrons.
Please find the ATOMIC WEIGHT OR MOLECULAR WEIGHT for the following.
1.) 3 Hg2 O
2.) Ca 3(AsO3)2
3.) Fe3(PO4)2
4.) 2 Mg(OH)2
5.) Sn(SO4)2
Please answer the following.
1.) If you have three isotopes, A, B & C, and their respective weights are A-2.0, B-3.0 and C-4.0, where would you expect the actual weight of the
element to be? (It would fall between what two numbers?)
2.) The following molecule is known as _____________________ because it has two atoms.
3.) Which of the following arrangements best describes this molecule....
F8
B
A
4.) Why are the weights of the elements on the periodic table in decimal form, rather than whole numbers?
5.) Define what an isotope is....
6.) There are 3 forms of carbon...carbon 12, carbon 13, carbon 14...what is the difference between the three (think atomically-electrons, protons and
neutrons)
7.) You find the element X to have a weight of 13.0012. From your research about element X you find that it is made up of 4 different isotopes.
X-11, X-12, X-13, X-14
a.) Which isotope would you be able to find the most of in the natural world?
b.) Rank in order of least to most the relative abundance of the isotopes?
C
8.) Please match the following compound with the terms listed below....
_____Coefficient
_____Subscript
_____Element
_____Molecule
_____Parenthese
A
E
C
2 Mg(OH)2
B
D
Label the following using ... (use the letter a, b,c to designate your answer)
A.)
B.)
C.)
Element
Compound
Mixture
1.) NaCl
______
2.) K
______
3.) Oil in water
______
4.) Nitrogen
______
5.) Air
______
6.) Fe + S
______
7.) FeS
______
8.) Rust
______
9.) water
______
10.) dirt
______
Label the following using ... (use the letter a, b,c to designate your answer)
A.)
B.)
Physical Change
Chemical Change
1.) Burning of paper
______
2.) Ice to water
______
3.) Rusting of metal
______
4.) Souring of milk
______
5.) Melting of chocolate
______
Label the following using ... (use the letter a, b,c to designate your answer)
A.)
B.)
Physical Property
Chemical Property
1.) Burns in presence of oxygen
______
2.) Boiling point
______
3.) Stinks when mixed with carbon
______
4.) mass
______
5.) hardness
______
71.) Is this...
a.) Precise
b.) Accurate
c.) Both Precise & Accurate
d.) Neither Precise nor Accurate
72.) Is this...
a.) Precise
b.) Accurate
c.) Both Precise & Accurate
d.) Neither Precise nor Accurate
73.) Is this...
a.) Precise
b.) Accurate
c.) Both Precise & Accurate
d.) Neither Precise nor Accurate
74.) Three students weigh an item using different scales. These are the values they report: How many significant figures should be assumed in each
measurement?
a. 20.03 g
b. 20.1 g
c. 0.2003 kg
75.) A 50g sample of metal has a volume of 4.43 cm3. Using the chart below tell me the type of metal you are working with.
a.) arsenic
b.) magnesium
c.) lead
d.) zinc
Please convert the following.
1) Using scientific notation the number 5,280 is written:
a. 5:2:8:0
b. 5.280 x 103
c.52.80 x 102
2) Using scientific notation the number 0.00000125 is written:
a. 1.25 x 106
b. 1.25 x 10-6
c. 12.5 x 108
d. 5,280 x100
d. 1.25 x 100