Exam 1: Matter and Energy: The Origin of the Universe

Electromagnetic radiation in the mid-infrared region of the spectrum has wavelengths around 0.6 $\mu$ m. Express this wavelength in meters using exponential notation (1 $\mu$ m = 10^-6 m).

A vapor or gas forming a solid is called ___________.

Identify the incorrect statement(s). A solution _____ I. can be a solid, liquid, or gas. II. can be heterogeneous or homogeneous. III. is a homogeneous mixture.

The temperature of the surface of the sun is 5800 K. What is this in °F?

Jupiter's mass is estimated to be 1.90 * 10²⁷ kg, and it has a diameter of 142,984 km. Assuming that Jupiter is spherical, estimate its density (the volume of a sphere is 4 $\pi$ r³/3).

Which of the following is not a pure substance?

Extensive properties are __________

Determine the number of atoms across the diameter of a human hair given that the diameter of an atom is 0.1 nm and the diameter of a human hair is 0.1 mm.

Given the following figure, which of the measurements listed is the best estimate of the length of the aluminum rod?

Which of the following is not a base SI unit?

Room temperature is often taken to be 25°C. What is this temperature in °F?

Identify the incorrect statement(s). A pure substance can be _____ I. an element or a compound. II. heterogeneous or homogeneous. III. a solution.

The diameter of the sun is 1,390,000 km. In scientific notation this is

The symbol and name corresponding to the factor 10^-9 is

In the movie The Italian Job, thieves steal gold bullion. One plan was to carry the ingots of gold off in suitcases. If each suitcase were 19 inches *14 inches * 10 inches, approximately how much would each suitcase weigh when filled with gold? The volume of each suitcase is 4.4 * 10⁴ mL, the molar mass of gold is 197 g/mol, and the density of gold is 19.3 g/mL.

Which of the following is the SI base unit for mass?

The bubbles that form in water after it has been boiling for some time are __________

An example of a chemical property of formaldehyde (CH₂O) is __________

John Dalton postulated that all matter is composed of small particles called atoms. For this proposition to be considered a valid scientific theory, __________

A hypothesis is __________