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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
molecule
B
element
C
single item
D
compound
2) 2 or more atoms chemically bonded together is a?
A
conjoined atoms
B
molecule
C
element
D
proton
3) 2 or more atoms of different elements chemically bonded together is a?
A
molecule
B
compound
C
both a molecule and compound
D
element
4) H2O is a?
A
pure element
B
compound molecule
C
molecular puzzle
D
molecule of a pure element
5) O3 (Ozone) is a?
A
compound
B
molecule
C
pure element
D
both a pure element and a 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
atoms
B
electrons
C
protons
D
neutrons
8) The protons plus the neutrons equals the?
A
atomic number
B
atomic symbol
C
nucleus number
D
atomic weight/mass
9) The elements on the Periodic Table are arranged according to?
A
electron number
B
atomic mass
C
alphabetically
D
atomic number
10) CO2 is made up of 2 elements, Carbon and Oxygen. It is a?
A
molecule of a pure element
B
pure element
C
compound
D
single atom
*select an answer for all questions
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