Chem 1151 Chapter 2

What is the formula for calculating density?

• Density = Mass + Volume

• Density = Mass - Volume

• Density = Volume / Mass

• Density = Mass / Volume

If an object has a mass of 50 grams and a volume of 10 cm³, what is its density?

• 0.5 g/cm³

• 2 g/cm³

• 10 g/cm³

• 5 g/cm³

What are the common units used to express density?

• grams per liter (g/L)

• ounces per gallon (oz/gal)

• grams per cubic centimeter (g/cm³), kilograms per cubic meter (kg/m³), pounds per cubic foot (lb/ft³)

• milliliters per cubic meter (mL/m³)

How many grams are in 1 kilogram?

• 200 grams

• 1000 grams

• 1500 grams

• 500 grams

What is the density of water in g/cm³?

• 1 g/cm³

• 0.5 g/cm³

• 2 g/cm³

• 1.5 g/cm³

What is the significance of significant figures in measurements?

• Significant figures are used to determine the color of a measurement.

• Significant figures are irrelevant in everyday measurements.

• Significant figures are only important in scientific research.

• Significant figures are important because they convey the precision of measurements and ensure accurate reporting in calculations.

How many significant figures are in the number 0.00456?

• 5

• 3

• 4

• 2

When multiplying 2.5 (2 significant figures) by 3.42 (3 significant figures), how many significant figures should the answer have?

• 3 significant figures

• 1 significant figure

• 2 significant figures

• 4 significant figures

What is the metric unit for measuring length?

• liter meter

• liter

• gram

• meter

What is the SI unit for mass?

• kilogram

• gram

• pound

• ounce