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Elements, Molecules, And Compounds
Test Description: Identification of Elements, Molecules and Compounds
Instructions: Answer all questions to get your test result.
1) A pure substance that cannot be broken down into anything else is a?
A
single item
B
compound
C
element
D
molecule
2) 2 or more atoms chemically bonded together is a?
A
molecule
B
proton
C
conjoined atoms
D
element
3) 2 or more atoms of different elements chemically bonded together is a?
A
element
B
molecule
C
both a molecule and compound
D
compound
4) H2O is a?
A
pure element
B
molecule of a pure element
C
compound molecule
D
molecular puzzle
5) O3 (Ozone) is a?
A
compound
B
pure element
C
both a pure element and a molecule
D
molecule
6) A compound can be chemically broken down into another substance
A
True
B
False
7) The atomic number is the number of ?
A
electrons
B
neutrons
C
protons
D
atoms
8) The protons plus the neutrons equals the?
A
atomic symbol
B
atomic number
C
atomic weight/mass
D
nucleus number
9) The elements on the Periodic Table are arranged according to?
A
atomic mass
B
alphabetically
C
atomic number
D
electron number
10) CO2 is made up of 2 elements, Carbon and Oxygen. It is a?
A
compound
B
molecule of a pure element
C
pure element
D
single atom
*select an answer for all questions
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