Chemistry Final Review 1

The right of the arrow is called?

• Reactant 
• Product
• Yields

1) Which isotope has the greatest number of protons?

• Pa-238

• U-240

• Np-238

• Pu-239

3) What color of light does a hydrogen atom emit when an electron transitions from the n=6 energy level to the n=2 energy level?

• orange

• yellow

• blue

• violet

4) The equation below represents the radioactive decay of a gold isotope.

¹⁷⁴ ₇₉ Au →¹⁷⁰₇₇ Ir + ?

Which choice correctly completes this equation?

• alpha particle

• beta particle

• photon

• neutron

6) How many electrons are in the outermost energy level of a neutral carbon atom?

• 2

• 4

• 6

• 8

7) The compound sodium chloride is placed in water and separates into ions. What are the correct names for these ions?

• The chloride and sodium ions are cations.

• The chloride and sodium ions are anions.

• The sodium ion is the anion, and the chloride ion is the cation.

• The sodium ion is the cation, and the chloride ion is the anion.

8) Which element will form covalent bonds with chlorine?

• carbon

• aluminum

• magnesium

• potassium

10) What is the chemical formula for chromium(III) oxide?

• CrO

• CrO₂

• Cr₂O₃

• Cr₃O₂

11) Based on the information in the table, what can be concluded?

• Both solids contain only ionic bonds.

• Both solids contain only covalent bonds.

• Solid X contains only covalent bonds, and Solid Y contains only ionic bonds.

• Solid X contains only ionic bonds, and Solid Y contains only covalent bonds.

12) What is the name of the compound with the chemical formula CoF₃?

• fluorocobalt

• cobalt trifluoride

• cobalt(III) fluoride

• fluorine(III) cobalt