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