WorksheetsA & P- Basic Chemistry Introductory Quiz
Total questions: 37
Worksheet time: 19mins
Name
Class
Date
1.
An electrically neutral atom bears what trait?
a)
It contains protons in its nucleus
b)
It contains the same number of protons and neutrons
c)
It contains the same number of electrons and protons
d)
It contains electrons in its electron shells.
2.
Isotopes of the same element vary in the number of _______________ they contain.
a)
protons
b)
neutrons in the nucleus
c)
electrons
d)
radioactive particles
3.
Ionic bonds tend to form between ____________________.
a)
atoms that have become electrically, and oppositely, charged
b)
atoms that share a single pair of electrons
c)
atoms that share two pairs of electrons
d)
hydrogen and oxygen atoms that bear weak but opposite charges
4.
Which of these molecular formulas represents both a molecule and a compound?
a)
H2
b)
O2
c)
N2
d)
C6H12O6
5.
Chemical reactions occur as bonds are formed or broken between molecules. The molecules that are changed by a reaction are called _______________.
a)
products
b)
ions
c)
reactants
d)
acids
6.
The reaction NaCl # Na+ + Cl-, as written, represents what type of reaction?
a)
synthesis reaction
b)
decomposition reaction
c)
exchange reaction
d)
reversible reaction
7.
Which of the following is not considered a building reaction?
a)
synthesis
b)
condensation
c)
anabolic
d)
decompostion
8.
Which of the following is not considered a decomposition reaction?
a)
catabolic
b)
degradation
c)
exergonic
d)
synthesis
9.
Energy is stored in the bonds of molecules. When the bonds are broken, energy is released to perform metabolic reactions.
a)
True
b)
False
10.
Which of the following is not a characteristic of water?
a)
nonpolar
b)
high specific heat
c)
high heat of evaporation
d)
cohesive and adhesive properties
11.
HIgh specific heat, cohesive, adhesive, and capillary action properties of water is due to its ability to form hydrogen bonds.
a)
True
b)
False
12.
The fact that water disassociates to form an equal amount of hydrogen ions and hydroxide ions determines that water is neutral on the pH scale.
a)
True
b)
False
13.
NaOH, or sodium hydroxide, will disassociate in water to form a/an
a)
acid
b)
base
c)
salt
14.
A pH that is 8.5 indicates an
a)
acid
b)
base
15.
What helps maintain the consistency of pH and minimizes changes in the concentrations of H+ and OH- ions?
a)
salts
b)
electrolytes
c)
buffers
d)
water
16.
Any substance that releases H+ ions in a solution is called a/an
a)
acid
b)
base
c)
salt
17.
When HCl is mixed with water H+ and Cl- ions are formed. The result is a/an
a)
acid
b)
base
c)
salt
18.
Which of the following procedure is the least invasive?
a)
MRI
b)
PET
c)
CT
d)
ultrasound
19.
Water will not mix with oil because
a)
the water is polar and oils are long, electrical molecules
b)
water is polar and oils are long, charged molecules
c)
water is polar and oils are nonpolar
20.
The bonds that form between the oxygen and hydrogens of water are considered ____________ bonds because the electrons are ____________.
a)
nonpolar; shared equally
b)
polar; shared equally
c)
nonpolar; shared unequally
d)
polar; shared unequally
21.
Many of characteristics of water, including its polarity, is due to
a)
the charge of the oxygen molecule
b)
the charge of the hydrogen molecules
c)
the high electronegativity of oxygen
d)
the high electronegativity of hydrogen
22.
A substance that gains an electron is said to have been _____, while a substance that loses an electron is said to be ________.
a)
reduced; oxidized
b)
oxidized; reduced
23.
Water is a compound and a molecule.
a)
True
b)
False
24.
The smallest unit of matter is the _____.
a)
atom
b)
molecule
c)
element
d)
compound
25.
Which of the following does not belong with the others?
a)
proton
b)
neutron
c)
electron
d)
nucleus
26.
What is the sum of the neutrons plus protons equal to?
a)
atomic number
b)
mass number
c)
atomic symbol
d)
atomic weight
27.
Electrons play a key role in the atomic mass of an element.
a)
True
b)
False
28.
Of the following, which represents an organic compound?
a)
H2O
b)
O2
c)
CO2
d)
H2CO3
29.
Few inorganic compounds have carbon atoms and none have C-C or C-H bonds.
a)
True
b)
False
30.
Which of the following statements is not true?
a)
Waters polarity allows it to act as an efficient and effective solvent
b)
Oxygen is required to complete decomposition reactions necessary for the release of energy in the body
c)
Carbon Dioxide is produced as a waste product and helps maintain the appropriate acid-base balance
d)
Acids are proton acceptors, while bases are proton donors
31.
Which of the following medical technologies is uses a medium to diagnose problems of the esophagus, stomach, duodenum, and small bowel?
a)
MRI
b)
PET
c)
CT
d)
flouroscopy
32.
Which of the following uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures.
a)
PET Scan
b)
CT Scan
c)
MRI
d)
Ultrasound
33.
Which of the following uses a radioactive drug (tracer) to help reveal how your tissues and organs are functioning.
a)
MRI
b)
PET
c)
CT
d)
Flouroscopy
34.
________ are special X-ray tests that produce cross-sectional images of the body using X-rays and a computer.
a)
MRI's
b)
PET Scan
c)
CT Scan
d)
Ultrasound
35.
What kind of bond is a weak attraction between a hydrogen atom and a polar molecule?
a)
covalent
b)
polar
c)
ionic
d)
hydrogen
36.
Of the 26 elements found in the human body, 11 are considered major elements and they make up about 50% of the human body.
a)
True
b)
False
37.
The atomic mass of iodine is 127. It's atomic number is 53. How many neutrons does it have? How many electrons does it have?
a)
53; 127
b)
74; 53
c)
53; 74
d)
127; 53
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