Which element is a metalloid? Check all that apply.

selenium (Se)

polonium (Po)

silicon (Si)

iodine (I)

tin (Sn)

antimony (Sb)

phosphorus (P)

What is the Lewis Dot Diagram of gold?

Describe the energy levels of an atom and how an electron moves between them.

In a particle accelerator, the accelerated particle primarily gains what?

Which of the following describes a characteristic of water that makes it cohesive in nature? A: It is a non-polar molecule with weak hydrogen boding B: It has a linear molecular structure with H-O-H arranged in a straight line.

What is the volume occupied by 48.0 g of ouzo, which has a density of 0.940 g/mL?45.1 mL51.1 mL37.0 mL24.5 mL

A pharmacist measures the mass of a powdered drug. The mass is 506 mg. What is the mass in grams? Write your answer as a decimal.

Which of these is a source of sediment? A. Fragments if other rocks B. Chemicals and minerals dissolved in water C. Sea shells D. All of the above

Entropy is greater at higher trophic levels than at lower levels ... True of False

If the caffeine concentration in a particular brand of soda is 2.85 mg/oz, drinking how many cans of soda would be lethal? Assume that 10.0 g of caffeine is a lethal dose, and there are 12 oz in a can.

Suppose that your favorite AM radio station broadcasts at a frequency of 1600 kHz. What is the wavelength in meters of radiation from the station? (Hint: convert kHz to Hz and find frequency first.)