Exam Review - Kylie & Austin

Multiple Choice

In an experiment, 2.62 g of iron react
completely with 1.50 g of sulfur. What
is the empirical formula for the
compound produced?

• FeS

• FeS2

• Fe2S

• Fe2S3

Multiple Choice

What do the ions +
K , 2+
Ca , and −
Cl
have in common?

• they have the same number of protons

• they will form covalent bonds with oxygen

• they have the same electron configuration as argon

• they are larger than their corresponding atoms

Multiple Choice

• I

• II

• III

• IV

Multiple Choice

When 42
19 K undergoes radioactive
decay, the result is two products, one
of which is calcium-42. What is the
other product?

• 4
  2 He

• 2
  4 He

• 1

  1 e

• 0

  -1 e

Multiple Choice

• II

• IV

• V

• VI