Chemical Formulas And Chemical Equations Question Preview (ID: 36326)
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Atom is to element as molecule is to
a) compound
b) mixture
c) nucleus
d) subscript
Which example is a compound?
a) Co
b) CO
c) He
d) Si
The materials before a chemical reaction are called
a) reactants.
b) products.
c) yields.
d) atoms.
Materials present BEFORE a chemical reaction
a) product
b) reactants
c) yields
d) chemicals
Chemical reactions are represented by
a) chemical compounds
b) chemical formulas
c) chemical equations
d) chemical symbols
How many elements are in NaHCO3?
a) 3
b) 4
c) 6
d) 8
What shows the number of molecules?
a) coefficient
b) subscript
c) product
d) reactants
How many atoms of carbon are in are in C12H22O11?
a) 22
b) 11
c) 3
d) 12
A subscript shows the number of
a) elements
b) molecules
c) atoms
d) compounds
Which is NOT a chemical formula?
a) Na
b) HE
c) Ca
d) Al
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