6 Weeks Exam -1st 9 Weeks
Pre-AP / Pre-IB Chemistry
15. What are the three subatomic particles of an atom and what are their charges?
N
16. An atom that is said to be neutral must have the same number of –
17. Give the definition for atomic number
18. Give the definition for mass number.
19. What is an isotope?
20. Write the isotopic notation for the following:
A. Chlorine-35
B. Carbon-12
C. Magnesium-25
D. Silicon-34
21. Solve the following problems using correct number of significant figures:
A. 35.25 + 3.5 =
B. 610.23 – 10 =
C. 32.9655 / 11.02 =
D. 103.123 x 52.1 =
E. 22.30 x 78 =
F. 523.896 + 45.21 =
Solve the following problems (show your work, use correct units, and round to 4 significant
figures)
22. A solution has a density of 1.50 g/mL. How many grams are needed to obtain 10.0 mL of solution?
23. Mercury is a liquid metal having a density of 13.6 g/mL. What is the volume of 1500g of
mercury metal?
Extra Credit (10 pts.) Show your work, use correct units, and round to 4 significant figures
in order to get the 10 pts.
35
Naturally occurring chlorine that is put in pools is 75.53 percent Cl (mass = 34.969 amu) and
37
24.47 percent Cl (mass = 36.966 amu). Calculate the average atomic mass
PLEASE DO NOT WRITE ON THIS TEST
1
6 Weeks Exam -1st 9 Weeks
Pre-AP / Pre-IB Chemistry
15. What are the three subatomic particles of an atom and what are their charges?
GO ON
16. An atom that is said to be neutral must have the same number of –
17. Give the definition for atomic number.
18. Give the definition for mass number.
19. What is an isotope?
20. Write the isotopic notation for the following:
A. Chlorine-35
B. Carbon-12
C. Magnesium-25
D. Silicon-34
21. Solve the following problems using correct number of significant figures:
A. 352.5 + 3.52 =
B. 610.23 – 10.12 =
C. 32.965 / 11.15 =
D. 10.3123 x 52.1 =
E. 22.30 x 78.1 =
F. 523.90 + 45.215 =
Solve the following problems (show your work, use correct units, and round to 4 significant
figures)
22. A solution has a density of 1.50 g/mL. How many grams are needed to obtain 10.0 mL of solution?
23. Mercury is a liquid metal having a density of 13.6 g/mL. What is the volume of 1500g of mercury metal?
Extra Credit (10 pts.) Show your work, use correct units, and round to 4 significant figures
in order to get the 10 pts.
35
Naturally occurring chlorine that is put in pools is 75.53 percent Cl (mass = 34.969 amu) and 24.47 percent
37
Cl (mass = 36.966 amu). Calculate the average atomic mass.
PLEASE DO NOT WRITE ON THIS TEST
2
6 Weeks Exam -1st 9 Weeks
Pre-AP / Pre-IB Chemistry
15. What are the three subatomic particles of an atom and what are their charges?
16. An atom that is said to be neutral must have the same number of –
17. Give the definition for atomic number.
18. Give the definition for mass number.
19. What is an isotope?
20. Write the isotopic notation for the following:
A. Chlorine-35
B. Carbon-12
C. Magnesium-25
D. Silicon-34
21. Solve the following problems using correct number of significant figures:
A. 480.3 + 4.95 =
B. 580.45 – 15.23 =
C. 45.850 / 20.65 =
D. 85.2365 x 10.1 =
E. 32.30 x 78.5 =
F. 623.90 + 40.215 =
Solve the following problems (show your work, use correct units, and round to 4 significant
figures)
22. A solution has a density of 1.50 g/mL. How many grams are needed to obtain 10.0 mL of solution?
23. Mercury is a liquid metal having a density of 13.6 g/mL. What is the volume of 1500g of mercury metal?
Extra Credit (10 pts.) Show your work, use correct units, and round to 4 significant figures
in order to get the 10 pts.
35
Naturally occurring chlorine that is put in pools is 75.53 percent Cl (mass = 34.969 amu) and 24.47 percent
37
Cl (mass = 36.966 amu). Calculate the average atomic mass.
PLEASE DO NOT WRITE ON THIS TEST
3
6 Weeks Exam -1st 9 Weeks
Pre-AP / Pre-IB Chemistry
15. What are the three subatomic particles of an atom and what are their charges?
GO ON
16. An atom that is said to be neutral must have the same number of –
17. Give the definition for atomic number.
18. Give the definition for mass number.
19. What is an isotope?
20. Write the isotopic notation for the following:
A. Chlorine-35
B. Carbon-12
C. Magnesium-25
D. Silicon-34
21. Solve the following problems using correct number of significant figures:
A. 48.03 + 49.5 =
B. 5.8045 – 152.3 =
C. 45.85 / 20.65 =
D. 85.2365 x 1.01 =
E. 323.0 x 78.5 =
F. 62.390 + 4.0215 =
Solve the following problems (show your work, use correct units, and round to 4 significant
figures)
22. A solution has a density of 1.50 g/mL. How many grams are needed to obtain 10.0 mL of solution?
23. Mercury is a liquid metal having a density of 13.6 g/mL. What is the volume of 1500g of mercury metal?
Extra Credit (10 pts.) Show your work, use correct units, and round to 4 significant figures
in order to get the 10 pts.
35
Naturally occurring chlorine that is put in pools is 75.53 percent Cl (mass = 34.969 amu) and 24.47 percent
37
Cl (mass = 36.966 amu). Calculate the average atomic mass.
PLEASE DO NOT WRITE ON THIS TEST
4