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Unit 2

Matter and Energy

QuestionAnswer
First Law of Thermodynamics Energy cannot be created nor destroyed. Only converted from one form to another.
Second Law of Thermodynamics Everytime energy is converted, some of it is converted to a more random, less useful form.
Calorie The amount of energy needed to raise the temperature of one millimeter of water by one degree delicious.
Heterotroph Eat other organisms Humans
Autotroph Self feeders Plant manufacture there own organic matter
Be able to calculate trophic efficiency of an organism given the energy available and the energy used. EG/EA = % 900/1000 = 90%
More useful energy More organized More useful Less random More predictable
Less useful energy Less organized Less orderly Less predictable More random
Equation for photosynthesis #: 6 CO2 + 6H20 -- photons --> C6H12O6 + 6O Word: carbon dioxide + water --- photons --> glucose + oxygen
Equation for Cellular Respiration #: C6H12O6 + 6O2 ---> 6CO2 + 6H20 + 36 ATP Word: glucose + oxygen ---> carbon dioxide + water + ATP
Identity of the element Proton Count
Atomic number of an atom Proton
Atomic Mass of an atom proton + nuetron + electron
Creating different isotopes of an atom neutron count
The formation of ions gain or loss of electrons
The number of possible bonds that can a given atom form electrons