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The density of bromine is 3.12 g/cm3. What is the mass of 155 mL of bromine? (Hint: density = mass/volume)

A sample of metal has a mass of 0.0049 g. What is this mass in milligrams? (Hint: 1 g = 1000 mg)

With reference to Question 20, which Laws of Thermodynamics does each part of this statement refer to?

Within an energy level, the _______ orbital is the lowest in energy.

After testing and refining ideas, scientists often develop a model that explains why things behave, as they do, and predicts what will happen in the future. This type of model is best referred to as a _______.

An atom gain 2 valence electrons (e-) resulting in a configuration of 1s22s22p63s23p8.  The identity of this ion is _______.

Which phase of matter has a definite volume and shape?

What form of energy will all the chemical energy produced by the plants in Question 23 ultimately become?

What would happen to the charge of this element in Question 2 if we removed electrons?

F, Cl, and Br all belong to what family (or group)?