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2nd SW Warm Up 9
Contributed by: Ruble
(Original author: Bellman)
1.
Which of the following is NOT an element?
Rock
Calcium
Hydrogen
Silicon
2.
Elements are pure substances.
True or False
True
False
What percentage ofthe crust do "Al" and "Si" make up?
3.
about 8%
about 36%
about 28%
about 2%
a pure substance
made of two or more elements chemically bonded
located on the periodic table
made of only one type of atom
4.
Which statementshouldbe listed under compounds?
a pure substance
made of two or more elements chemically bonded
located on the periodic table
both A and C
5.
Which statementshouldbe listed under elements?
Pure substances
made of two or more elements chemically bonded
necessary for life
made of only one type of atom
6.
Which statementshouldbe listed in themiddle?
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