Chapter 1 Pt 1
How many significant figures can the answer have?
(33.1 + 132.55) x 0.02 = ??
a. 3.313
b. 3
c. 3.31
d. 3.3130
b. 3
The nucleus of an atom contains _______.
a. Protons
b. Electrons
c. Neutrons
d. A and B
e. B and C
f. C and A
f. C and A
Which of the following is considered a mixture?
a. O3
b. Cr2O7
c. Air
d. Carbon monoxide
c. Air
Based on oxygen’s average atomic mass, which of the following isotopes of oxygen would you expect to be the most common?
a. Oxygen-18
b. Oxygen-13
c. Oxygen-16
d. Oxygen-12
c. Oxygen-16
Who used the Cathode Ray Experiment in 1897 to prove the existence of electrons?
a. Demetri Mendeleev
b. Ernest Rutherford
c. JJ Thomson
d. John Dalton
e. James Chadwick
f. Niels Bohr
c. JJ Thomson
The SI unit for mass is the ______.
a. Slug
b. Gram
c. Kilogram
d. Pound
c. Kilogram
Deposition is the change of a ______ to a ______.
a. Solid to Gas
b. Gas to Solid
c. Liquid to Gas
d. Gas to Liquid
b. Gas to Solid
Which compound will demonstrate ionic character?
a. NH4Br
b. H2S
c. AgCl
d. CH3COOH
c. AgCl
Classify Cr2O7.
a. Covalent
b. Ionic
c. Both
d. Neither
b. Ionic
_______ __________ was responsible for discovering protons in 1911 using the Gold Foil Experiment.
a. JJ Thomson
b. Ernest Rutherford
c. Demetri Mendeleev
d. James Chadwick
e. John Dalton
f. Niels Bohr
b. Ernest Rutherford
The quantity _____L is the same as 300 μL.
a. 30000000
b. 30000
c. 0.0003
d. 0.000003
c. 0.0003
The temperature of a certain substance should be approximately 301 K. A beaker of this substance is measured with a thermometer four times. The results are: 260 K, 281 K, 310 K, 295 K. How would you describe this set of measurements?
a. Precise and accurate
b. Accurate but not precise
c. Precise but not accurate
d. Neither accurate nor precise
d. Neither accurate nor precise
Which of the following is a metalloid?
a. Sulfur
b. Titanium
c. Carbon
d. Potassium
e. Boron
e. Boron
Bismuth is found on the Periodic Table at the intersection of period _____ and group _______.
a. 5A, 6
b. 5B, 6
c. 6, 5B
d. 6, 5A
e. 3A, 2
f. 3B, 2
g. 2, 3B
h. 2, 3A
d. 6, 5A
The Plum-Pudding Model was introduced by _____ _____ in 1904.
a. Niels Bohr.
b. Ernest Rutherford
c. Demetri Mendeleev
d. JJ Thomson
e. James Chadwick
f. John Dalton
d. JJ Thomson
A soda bottle is weighed empty, and is found to have a mass of 185 g. It is filled to the top with a liquid that has a density of 0.79 g/cm3.The filled bottle is weighed and found to have a mass of 411 g. What is the volume of the bottle in cm3?
a. 234 mL
b. 286 mL
c. 520 mL
d. 146 mL
e. 325 mL
f. 179 mL
b. 286 mL
Which of the following is a type of pure substance?
a. Compounds
b. Mixtures
c. Fuels
d. Sublimations
a. Compounds
How many grams are in 2 moles C2H5N2?
a. 114 g
b. 62 g
c. 23 g
d. 20 g
e. 17 g
a. 114 g
What is the molecular weight of C2H5OH?
a. 29 g/mol
b. 30 g/mol
c. 46 g/mol
d. 83 g/mol
c. 46 g/mol
Who came up with an Atomic Theory in the first decade of the 19th century that includes four postulates about atoms and elements?
a. Ernest Rutherford
b. Niels Bohr
c. John Dalton
d. JJ Thomson
e. Demetri Mendeleev
f. James Chadwick
c. John Dalton
How many millimeters are in 0.301 ft?
a. 9.876 x 10-4 mm
b. 9.9 x 10-4 mm
c. 9.88 x 10-4 mm
d. 9.876 x 104 mm
e. 9.9 x 104 mm
f. 9.88 x 104 mm
g. 91.7 mm
h. 91 mm
i. 91.74 mm
g. 91.7 mm
What is freezing?
a. Exothermic
b. Endothermic
c. A chemical change
d. A rapid process
e. All of the above
a. Exothermic
The number of protons and electrons, respectively, in a Fluorine ion is:
a. 19p, 19e
b. 10p, 9e
c. 9p, 9e
d. 9p, 10e
d. 9p, 10e
How many nickel atoms are in 2000 mg of nickel?
a. 2 x 1022
b. 6 x 10-26
c. 7 x 1025
d. 2.0 x 10-22
a. 2 x 1022
How many molecules are in 5 grams of H2O?
a. 6.022 x 1023 molecules
b. 5 molecules
c. 1.67 x 1023 molecules
d. 2.0 x 10-23 molecules
c. 1.67 x 1023 molecules