1. Explain how light and matter interact. How can an object 'look' blue when a white light is shined on it?
2. Since E=hv and v=c/l, derive an expression to solve for h?
3. Physically, what is the difference between visible and IR light?
4. How many electrons must go around most atoms in a Lewis dot structure of the atoms H and C. Provide an example of a molecule which shows a bond between both atoms in a molecule.
The next three questions are related.
5. Provide a balanced chemical equation of the reaction of H2 + O2 to give H2O.
6. Which element limits the production of H2O?
7. What is the equation for calculating moles? If someone has 2 moles of Hydrogen, what is the maximum amount of water one can obtain from the above reaction?

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1. Matter can absorb an energy from a photon (a particle of light). Light is a mix of photons with various amount of energy and various wave length. Matter can absorbe some of the photons, and some are reflected. The visible light (the white light) is a mix of all colours. When a blue object is shined with a white light, it absorbs other colors, orange the most because it is complementary with blue, and it reflects blue color, and it appears blue...

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