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WorksheetsIntroduction to Chemistry
Total questions: 30
Worksheet time: 15mins
Chemistry is the science that deals with the composition and properties of substances and various elementary forms of _________________.
oxygen
matter
ozone
substances
A sunburn is caused by what?
ozone
oxygen
magnetic radiation
ultraviolet radiation
Which ultraviolet radiation are we particularly concerned with that causes harm to humans?
UVA
UVB
UVC
UVD
Increased UVB can cause
skin cancer
cataracts
Both A and B
None of the above
Living organisms are protected from UVB by what in the atmosphere?
Carbon dioxide
Oxygen gas
Ozone
O2
What is the lowest layer in the atmosphere called?
Stratosphere
Troposphere
Hemisphere
Talcosphere
Which layer in the atmosphere is located above the troposphere?
Stratosphere
Hemisphere
Equator
Ozone layer
In which layer of the atmosphere is the ozone layer located?
Troposphere
Stratosphere
Hemisphere
Ozonosphere
How is ozone formed?
When oxygen gas is exposed to ultraviolet radiation.
When oxygen is exposed to ultraviolet radiation.
When carbon dioxide is exposed to UVA radiation
When carbon dioxide is exposed to UVB radiation.
What is the formula for ozone?
O
O2
O3
O4
What is the formula for oxygen gas?
O
O2
O3
O4
Between 1981 and 1983, a group called the _________________________ monitored ozone levels in the atmosphere.
British Antarctic Survey
Alaskan Arctic Survey
Himalayan Wilderness Troupe
National Geographic Society
In October of 1985, the British Antarctic Survey reported a confirmed ________________ in the amount of ozone in the stratosphere.
Increase
Decrease
Equality
Improvement
What does CFC stand for?
Chlorofluorocarbon
Carbonofloralchlorine
Chlarinaflorinacarbonia
Carboniafloriniachlorine
Who synthesized the first CFCs in 1928?
Albert Einstein
Thomas Jefferson
Thomas Midgley, Jr.
Louis Pasteur
What does a CFC consist of?
Copper, iron, and fluorine
Carbon, cobalt, and iron
Chromium, nickel, and phosphorus
Fluorine, chlorine, and carbon
CFC's are made..
In nature
In the laboratory
To help the earth
To close the hole in the ozone layer
In what year did CFCs reach an all time high?
1980
1985
1990
1995
When did scientists start to detect the presence of CFCs in the atmosphere?
1960s
1970s
1980s
1990s
____________ is anything that has mass and takes up space.
Matter
Mass
Measurements
Metric
Is air matter?
Yes
No
Maybe
Sometimes
Weight measures the amount of matter and __________________________.
magnetic radiation
magnetic pull
gravitational radiation
gravitational pull
Earth's gravitational pull becomes ______________ as you move away from Earth above sea level.
Stronger
Weaker
Stays the same
Exponential
Scientists measure matter in terms of:
its gravitational pull
matter
mass
weight
________________ does not depend on gravitational force:
Matter
Mass
Measurements
Weight
Which of the following means that you can see it without a microscope?
Atomic
Submicroscopic
Macroscopic
Microscopic
Which of the following means that you cannot see it even with an optical microscope?
Atomic
Submicroscopic
Macroscopic
Both A and B
Which of the following means that you need a microscope to see it?
Macroscopic
Microscopic
Atomic
Submicroscopic
Atoms are on the _____________ level.
Macroscopic
Microscopic
Submicroscopic
Micrascopic
A ______________ is a visual representation of data.
Form
Atom
Atomic mass
Model
