Straighterline Chemistry Final Exam Test Questions And Answers
Course
NURSING 706
Institution
NURSING 706
Straighterline Chemistry Final Exam Test Questions And Answers.
What is the term used for findings that are summarized based on a pattern or trend?
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction
Which of the following is a tentative explanation for a set of observations?
Select ...
Straighterline Chemistry Final Exam Test
Questions And Answers.
1). What is the term used for findings that are summarized based on a pattern or trend?
a. law
b. hypothesis
c. theory
d. phenomena
e. prediction
Ans: a. Law
2). Which of the following is a tentative explanation for a set of observations?
select one:
a. law
b. hypothesis
c. theory
d. phenomena
e. prediction
Ans: b. Hypothesis
3). If a liquid contains 60% sugar and 40% water throughout its composition then what is it
called?
select one:
a. solute
b. compound
c. homogeneous mixture
d. heterogeneous mixture
e. solvent
Ans: c. Homogeneous mixture
4). Which of the following does not have a uniform composition throughout?
select one:
a. element
b. compound
c. homogeneous mixture
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, d. heterogeneous mixture
e. solvent
Ans: d. Heterogeneous mixture
5). Which one of these represents a physical change?
select one:
a. water, when heated, forms steam.
b. bleach turns hair yellow.
c. sugar, when heated, becomes brown.
d. milk turns sour.
e. apples, when exposed to air, turn brown.
Ans: a. Water, when heated, forms steam.
6). How many micrograms are in 65.3 kg?
select one:
a. 0.653 μg
b. 6.53 × 107 μg
c. 6.53 × 104 μg
d. 6.53 × 10-8 μg
e. 6.53 × 1010 μg
Ans: e. 6.53 × 1010 μg
7). A smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0
millimeters (depth). what is the volume of the smart phone in cubic centimeters? (1 in =
2.54 cm)
select one:
a. 58 cm3
b. 1.7 x 105 cm3
c. 90 cm3
d. 3.4 cm3
e. 34 cm3
Ans: a. 58 cm3
8). Given that 1 inch = 2.54 cm, 1.00 cm3 is equal to
select one:
a. 16.4 in3
b. 6.45 in3
c. 0.394 in3
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, d. 0.155 in3
e. 0.0610 in3
Ans: e. 0.0610 in3
9). What terms defines a mass which is exactly equal to 1/12 the mass of one carbon-12
atom?
select one:
a. isotope number
b. mass number
c. mass-to-charge ratio
d. atomic number
e. atomic mass unit
Ans: e. Atomic mass unit
10). How many neutrons are there in an atom of lead whose mass number is 208?
select one:
a. 82
b. 126
c. 208
d. 290
e. none of them
Ans: b. 126
11). Which of these elements is chemically similar to magnesium?
select one:
a. sulfur
b. calcium
c. iron
d. nickel
e. potassium
Ans: b. Calcium
12). C(graphite) and c(diamond) are examples of:
select one:
a. isotopes of carbon.
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, b. allotropes of carbon.
c. the law of definite proportions.
d. different carbon ions.
Ans: b. allotropes of carbon.
13). The 80br- ion has
select one:
a. 45 protons, 35 neutrons, 45 electrons.
b. 35 protons, 45 neutrons, 34 electrons.
c. 35 protons, 45 neutrons, 36 electrons.
d. 45 protons, 35 neutrons, 46 electrons.
e. 35 protons, 45 neutrons, 46 electrons.
Ans: c. 35 protons, 45 neutrons, 36 electrons.
14). The formula for sodium sulfide is
select one:
a. nas
b. k2s
c. nas2
d. na2s
e. ses
Ans: d. Na2S
15). Which one of the following formulas of ionic compounds is the least likely to be correct?
select one:
a. nh4cl
b. ba(oh)2
c. na2so4
d. ca2no3
e. cu(cn)2
Ans: d. Ca2NO3
16). What is the name of clo - ion?
select one:
a. hypochlorite
b. chlorate
c. chlorite
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