CHEM201 Chapter 01 Clicker Questions

Shikah, Noor, and Nora are conducting an experiment to determine the nature of milk. Which of the following best describes a sample of milk?

• Pure substance

• Homogeneous mixture

• Heterogeneous mixture

• All of the above

• None of the above

Which of the following is not an SI unit of measurement?

• letter

• meter

• second

• kilogram

• kelvin

An object changes by 10 degrees Celsius. Express this temperature change in Kelvin units.

• 283 K

• 10 K

• -263 K

• Cannot be determined without knowing the initial and final temperature

A compound can be separated into its constituent elements by physical means.

• True

• False

The liquid state of matter

• has a defined shape and a defined volume.

• has a defined shape but no defined volume.

• has a defined volume but no defined shape.

• has no defined shape and no defined volume.

Which of the following is the appropriate conversion factor to use to convert a measurement from units of grams to units of kilograms?

• 1 g/1000 kg

• 1000 kg/1 g

• 1000 g/1 kg

• 1 kg/1000 g

A mixture can be separated into its constituent chemical substances by physical means.

• True

• False

Invisible substances such as air are not examples of matter.

• True

• False

The quantity 100 pm is the same as

• 10-12 m.

• 10-1 nm.

• 1.0 x 10-2 nm.

• 1.0 x 102 nm.

• none of the above.

Which of the following could be used to convert 10 cm^2 to mm^2?

• 10 cm^2 X 1 mm^2/10 cm^2

• 10 cm^2 X 1 cm^2/10 mm^2

• 10 cm^2 X 10 mm^2/1 cm^2

• 10 cm^2 X 10^2 mm^2/1 cm^2