Describe temperature at the molecular level. 

What is the lowest possible temperature in degrees Celsius? What is the lowest possible temperature in Kelvins?  

A box has a volume of 200 cm3 and a mass of 100 grams. Water has a density of 1 g/cm3. What is the weight of the box? If the box is held underwater, what is the buoyant force on the box? If the box is let go, does the box sink or float?

Bronco Brown leaps off a high cliff with a bungee cord and experiences free fall for 4 seconds. The the bungee cord begins to stretch, stopping him in 2 seconds. Fortunately, the bungee cord stretches to its maximum length just short of the ground below!Bronco Brown has a mass of 70 kg and g = 10 m/s2. Fill in the blanks below for the corresponding letters with the velocity and momentum at the given times.  

How much energy (in kiloJoules) does it take to change 75 grams of ice at -10 oC to 75 grams of water at 50 oC?

Which sub-atomic particle is transferred in order to create a static charge. 

Name the following compound:   HBr

Write in the correct coefficients to balance the following chemical equation. 

Explain why sunsets are red/orange. 

What is the molar mass of CO2 ?