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Unit 2 Reading Comprehension Elements/Compounds
Test Description: Reading
Instructions: Answer all questions to get your test result.
1) A ______________ is a PURE SUBSTANCE that contains only one kind of atom.
A
mass
B
element
C
atom
D
compound
2) Elements are arranged on the __________ _________ based on their properties.
A
periodic table
B
chemical formula
C
chemical symbol
D
gravitational pull
3) Each element is represented by a one or two-letter abbreviation called a ____________ symbol
A
chemical
B
matter
C
elemental
D
physical
4) A __________ is a substance that is made when two or more elements combine.
A
mass
B
compound
C
element
D
matter
5) A molecule of water contains two atoms of _________ and one atom of _______
A
hydrogen, carbon
B
hydrogen, oxygen
C
oxygen, hydrogen
D
hydrogen, aluminum
6) Ca is the chemical symbol for which element?
A
Carbon
B
Gold
C
Chromium
D
Calcium
7) The element that is represented by he chemical symbol Si
A
Silicon
B
Iron
C
Aluminum
D
Sodium
8) The chemical symbol for sodium is
A
S
B
Na
C
So
D
Si
9) The chemical symbol for iron is
A
Ag
B
I
C
Ir
D
Fe
10) The chemical formula for water is H2O, is H20 an element or compound
A
element
B
compound
C
neither
D
both
*select an answer for all questions
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