CHEM 101 ACTUAL FINAL EXAM WITH ACCURATE SOLUTIONS- (PROFESSOR VERIFIED)
How many significant figures are in this number, 0.01160
4
Select the correct scientific notation for 117000
1.17 x 10^5
the temperature of an experiment is designed at 122 degrees F. What is it in Celsius?
50 degrees Celsius
An experiment is performed at -173 degrees C. What is the temperature in Kelvin?
100K
A piece of metal has a mass of 340 g and a volume of 17.6 mL. What is the density of the
metal?
19.3 g/mL
The comparison of the density of a substance with the density of water is defined as ____.
specific gravity
,The following forms of energy can be classified as potential energy EXCEPT ____.
A). Gasoline B). Running
C). Peanut butter sandwich D). Water held by a dam
running
The following examples are chemical changes EXCEPT
A). Rusting iron B). Cooking an egg
C). Burning gasoline D). Melting ice
melting ice
The amount of heat necessary to raise the temperature of 1 g liquid water by 1oC, is
defined as ___.
a calorie
How many calories are required to heat 40 gram of water from 37°C to 57°C?
[Specific heat (SH) of water is 1 cal/g•oC]
800 calories
What is the metal when 20 g of the metal absorbs 6.16 cal and the temperature rises
from 30 oC to 40 oC ?
,Specific heats of some metals:
Gold: 0.0308 cal/g oC
Copper: 0.0920 cal/g oC
Iron: 0.1080 cal/g oC
Aluminum: 0.2140 cal/g oC
Gold (Au)
When you add salt (NaCl) to a cup of water, the salty water is _____.
a homogeneous mixture
Glucose is a covalent compound in which the ratio of carbon (C), hydrogen (H) and
oxygen (O) is 6 : 12 : 6. What is the correct formula for glucose?
C6H12O6
Which subatomic particle(s) are found on the outside of the nucleus?
electrons
Identify the element located in Group 6A, period 2
Oxygen
, How many protons are in the nucleus of the chlorine (Cl) atom?
17
How many neutrons does Ca-44 have in its nucleus?
24
Cobalt-60 (Co-60) is a radioactive isotope sometimes used in the treatment of cancer.
Which of the following statements is true about an atom of cobalt-60?
A). It contains 27 neutrons.
B). It contains 27 protons. 60
C). It contains 60 neutrons.
D). It contains 87 neutrons.
27 protons
The following elements are metals EXCEPT ______.
A). sodium B). potassium
C). aluminum D). Sulfur
sulfur
The following elements are transition metals EXCEPT ______.
A). Cobalt (Co) B). Sodium (Na)
C). Mercury (Hg) D). Zinc (Zn)
How many significant figures are in this number, 0.01160
4
Select the correct scientific notation for 117000
1.17 x 10^5
the temperature of an experiment is designed at 122 degrees F. What is it in Celsius?
50 degrees Celsius
An experiment is performed at -173 degrees C. What is the temperature in Kelvin?
100K
A piece of metal has a mass of 340 g and a volume of 17.6 mL. What is the density of the
metal?
19.3 g/mL
The comparison of the density of a substance with the density of water is defined as ____.
specific gravity
,The following forms of energy can be classified as potential energy EXCEPT ____.
A). Gasoline B). Running
C). Peanut butter sandwich D). Water held by a dam
running
The following examples are chemical changes EXCEPT
A). Rusting iron B). Cooking an egg
C). Burning gasoline D). Melting ice
melting ice
The amount of heat necessary to raise the temperature of 1 g liquid water by 1oC, is
defined as ___.
a calorie
How many calories are required to heat 40 gram of water from 37°C to 57°C?
[Specific heat (SH) of water is 1 cal/g•oC]
800 calories
What is the metal when 20 g of the metal absorbs 6.16 cal and the temperature rises
from 30 oC to 40 oC ?
,Specific heats of some metals:
Gold: 0.0308 cal/g oC
Copper: 0.0920 cal/g oC
Iron: 0.1080 cal/g oC
Aluminum: 0.2140 cal/g oC
Gold (Au)
When you add salt (NaCl) to a cup of water, the salty water is _____.
a homogeneous mixture
Glucose is a covalent compound in which the ratio of carbon (C), hydrogen (H) and
oxygen (O) is 6 : 12 : 6. What is the correct formula for glucose?
C6H12O6
Which subatomic particle(s) are found on the outside of the nucleus?
electrons
Identify the element located in Group 6A, period 2
Oxygen
, How many protons are in the nucleus of the chlorine (Cl) atom?
17
How many neutrons does Ca-44 have in its nucleus?
24
Cobalt-60 (Co-60) is a radioactive isotope sometimes used in the treatment of cancer.
Which of the following statements is true about an atom of cobalt-60?
A). It contains 27 neutrons.
B). It contains 27 protons. 60
C). It contains 60 neutrons.
D). It contains 87 neutrons.
27 protons
The following elements are metals EXCEPT ______.
A). sodium B). potassium
C). aluminum D). Sulfur
sulfur
The following elements are transition metals EXCEPT ______.
A). Cobalt (Co) B). Sodium (Na)
C). Mercury (Hg) D). Zinc (Zn)
