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Chemistry
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Acids Bases and Salts
23
Biochemistry Introduction
217
Characteristics of Acids Bases and Salts
114
Chemical Industries
66
Environmental Chemistry: Atmosphere
95
Environmental Chemistry: Water
61
Chemical Equilibrium
46
Hydrocarbons
86
Organic Chemistry
92
The Atmosphere
25
Show/Hide Answers
Hydrocarbons
When two carbon atoms share two electron pairs then they form
single bond
double bond
triple bond
coordinate covalent bond
Author:
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Comment
Organic Chemistry
How many isomers are contained by pentane?
two
three
four
five
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Comment
Organic Chemistry
Methanal is an example of
aldehydes
ketones
carboxylic acids
ethers
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Comment
Biochemistry Introduction
The nuclei of cells consist of
proteins
carbohydrates
nucleic acids
vitamins
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Characteristics of Acids Bases and Salts
A base is a substance that ionizes in water to produce
H+ ions
OH- ions
O2
H2
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Comment
Biochemistry Introduction
Which of the following is a pentahydroxy ketone?
glucose
fructose
sucrose
starch
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Comment
Environmental Chemistry: Atmosphere
Which of the following can cause eye irritation in the troposphere?
chlorofluorocarbons (CFCs)
methane
ozone
lead compounds
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Comment
Characteristics of Acids Bases and Salts
What is the effect of acid on the skin?
no effect
causes skin cancer
corrosive
causes harm to skin tissue
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Comment
Biochemistry Introduction
Which of the following causes hard deposits in kidneys and joints when taken in excess amount?
vitamin A
vitamin B
vitamin C
vitamin D
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Comment
Biochemistry Introduction
Which of the following contains a larger proportion of saturated fatty acid units?
fats
oils
lipids
proteins
Author:
rikazzz
Comment
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