Chemical Formulas And Chemical Equations Question Preview (ID: 36326)


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Which is NOT a chemical formula?
a) Na
b) HE
c) Ca
d) Al

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

Chemical reactions are represented by
a) chemical compounds
b) chemical formulas
c) chemical equations
d) chemical symbols

A subscript shows the number of
a) elements
b) molecules
c) atoms
d) compounds

How many elements are in NaHCO3?
a) 3
b) 4
c) 6
d) 8

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

Atom is to element as molecule is to
a) compound
b) mixture
c) nucleus
d) subscript

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