Molecules Final Practice
Authored by ALEX STRONG
Science
7th Grade
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17 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What do we call a chemical substance made up of atom from 2 or more different types of elements bonded together?
formula
atom
subscript
compound
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
All ____________ are made up of two or more atoms bonded together.
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
H2O2← ?
This number tells the number of atoms present.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The smallest unit of an element that still holds all the properties of the element is an _____________.
atoms
molecules
electrons
elements
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does this image represent?
Atom
Element
Compound
Marshmallows
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a valence electron?
The sum of neutrons and protons.
The # of electrons in the last orbital.
A type of bond.
A popular compound.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Carbon dioxide (CO2) contains how many atoms of oxygen?
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