CHEM 1050 Final Jan 2024

Which of the following is NOT an example of matter?

• a glass of water

• a marble statue

• the air you breathe

• the sound of thunder

Which of the following is a chemical property of oxygen?

• It is a gas at room temperature.

• It has a mass of 32.0g/mol.

• It combines with hydrogen to form water.

• All of these are chemical properties.

Given the calculation: 3.0815m x 0.020m = ? What is the answer reported to the correct number of significant figures?

• 0.06m²

• 0.062m²

• 0.0616m²

• 0.06163m²

Approximately how fast is 100 miles per hour in kilometers per minute?

• 1.04

• 2.68

• 3,730

• 9,650

An object with a volume of 88.0ml has a mass of 44.0g. What is it's specific gravity?

• 0.500g/ml

• 2.00g/ml

• 0.500

• 2.00

What is true about the formulas Co(s) and CO(s)?

• They both represent the same thing.

• They both represent a substance in solution.

• Co is covalently bonded, CO is ionically bonded.

• Co represents an element, CO represents a compound.

Which of the following statements describes a mixture?

• The components of a mixture can be present in any ratio.

• Chemical reactions are required to separate the components of a mixture.

• The chemical properties of substances change when they are in a mixture.

• Mixtures must always be homogeneous.

Which is true of the the samples of matter shown?

• A and B are substances, C and D are mixtures

• A and B are elements, C and D are compounds

• A is homogeneous, B, C, and D are heterogeneous

• A and C are heterogeneous, B and D are homogeneous

Which subatomic particle has a mass of 0.0005 amu?

• Electron

• Neutron

• Nucleon

• Proton

Which of the following statements correctly describes the charges of subatomic particles?

• Proton = +1 Neutron = 0 Electron = -1

• Proton = +2 Neutron = 0 Electron = -1

• Proton = +1 Neutron = +1 Electron = 0

• Proton = +1 Neutron = -1 Electron = +1