Semester 1 Finals Review

0.12500 has ___ sig figs.

• 3
• 4
• 5
• 6

Coffee is an example of a __________.

• heterogeneous mixture
• colloid
• compound
• homogeneous mixture

Match each atomic model with who discovered it. 

• 1: Dalton, 2: Thomson, 3: Rutherford, 4: Bohr
• 1: Dalton, 2: Bohr, 3: Rutherford, 4: Thomson
• 1: Bohr, 2: Thomson, 3: Dalton, 4: Rutherford
• 1: Rutherford, 2: Dalton, 3: Bohr, 4: Thomson

How many valence electrons do elements in Group 6 have?

• 1
• 2
• 8
• 6

Write the formula for sulfuric acid. 

• H₂SO₃
• H₂S
• H₂C₂O₄
• H₂SO₄

What is the name of H₃PO₄?

• hydrogen (III) phosphate
• trihydrogen phosphate
• phosphoric acid
• phosphorus acid

The net charge on an aluminum ion is +3 because there are

• 13 protons and 10 electrons
• 10 protons and 13 electrons
• 13 protons and 10 neutrons
• 10 neutrons and 13 electrons

The net charge on an oxygen ion is -2 because there are

• 8 protons and 10 neutrons
• 8 protons and 10 electrons
• 10 protons and 8 electrons
• 10 protons and 8 neutrons

Which of the following pairs of elements will form an ionic bond?

• O and Cl
• Ni and N
• Sn and Cu
• H and C

What element has the valence shell configuration 4s² 4p²?

• Se
• Ti
• Ca
• Ge