Practice Exam: Chemistry 1

Which property of matter is defined as the amount of space an object occupies?

• Mass
• Density
• Volume
• Weight

The SI unit of length is:

• Inch
• Meter
• Foot
• Yard

A balance is used to measure:

• Temperature
• Mass
• Volume
• Time

Which statement about precision is correct?

• Precision refers to how close values are to the true value.
• Precision means the same as accuracy.
• Precision refers to how close repeated measurements are to each other.
• Precision has no relation to measurements.

The correct formula to calculate mass is:

• Density × Volume
• Volume / Density
• Density / Volume
• Density + Volume

Which of the following is NOT a base SI unit?

• Kilogram
• Meter
• Second
• Liter

A student records the mass of a sample as 4.200 g. How many significant figures are present?

• 2
• 3
• 4
• 5

In scientific notation, 0.00072 is written as:

• 7.2 × 10⁻²
• 7.2 × 10⁻³
• 7.2 × 10⁻⁴
• 7.2 × 10⁻⁵

Who is credited with arranging the periodic table according to increasing atomic mass?

• Dalton
• Mendeleev
• Rutherford
• Bohr

The vertical columns in the periodic table are called:

• Rows
• Periods
• Groups
• Levels