Are heterogeneous mixtures the least well-mixed of mixtures?
Chemical formulas are a shorthand way to represent ____.
What are the simplest pure substances?
In a chemical equation, the number that appears in front of the formula is called a(an)_____.
A(An)_____ uses symbols and formulas to describe a chemical reaction.
Stainless steel is a mixture of
a. iron and chromium
b. iron and calcium
c. iron and copper
d. iron and gold