CHEM111 Exam 1 Review
Chapter 1, 2, 3, and 4
,The following are properties of potassium metal. Which of the following is a
chemical property of potassium metal?
• Potassium metal has a melting point of 63.25°C
O
• Potassium reacts violently with water to form a strong base
• Potassium metal has a density of 0.856 g/cm3
• Potassium metal is silver in color
• Potassium metal is a soft solid at room temperature
1
,Including a correct number of significant figures, the answer to the
mathematical expression (0.243 × 4.22) + 21.0 is:
22 0 .
2
, What volume of gold has a mass of 45.0 grams? (density of gold = 19.30
g/mL)
2 3]
.
3
Chapter 1, 2, 3, and 4
,The following are properties of potassium metal. Which of the following is a
chemical property of potassium metal?
• Potassium metal has a melting point of 63.25°C
O
• Potassium reacts violently with water to form a strong base
• Potassium metal has a density of 0.856 g/cm3
• Potassium metal is silver in color
• Potassium metal is a soft solid at room temperature
1
,Including a correct number of significant figures, the answer to the
mathematical expression (0.243 × 4.22) + 21.0 is:
22 0 .
2
, What volume of gold has a mass of 45.0 grams? (density of gold = 19.30
g/mL)
2 3]
.
3
