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Chemistry//
Chem
Question | Answer |
---|---|
Define chemistry | the study of matter and the changes that the matter undergoes |
Define matter | Anything that posseses mass and occupies space. |
What is the "nature of matter"? | compostition of a particular kind, the forces holding it's parts together, it's observable properties. |
Define a physical change and provide examples | Does not cause a change in the chemical composition of a material-color, taste, odor, melting & boiling point. |
Define a chemical change and provide examples | those that result in the formation of a new substance-what it does (react) How does it react with an acid |
Define energy | the ability to do work |
Define kinectic energy and provide examples | energy of motion-a track runner running in a race |
Define potential energy and provide examples | stored energy-a track runner in the starting postion |
Define inorganic chemistry- | study of compounds usually containing elements other than carbon |
Define organic chemistry | study of certain carbon compounds |
Define biochemistry | the study of compounds produced by living organisms |
Define embalming chemistry | study of those types of matter and the changes in matter related to the disifection and preservation of human remains |
Define thanatochemistry | study of those physical and chemical changes in the human body that are caused by the process of death |
Identify the common set of units used by all scientists | Metric system/SI units |
Standard unit of length | meter (m) |
Stardard unit of volume | liter (L) |
Standard unit of mass | kilogram (kg) |
Standard unit of heat | calorie (cal) |
Define a calorie and a Calorie | the quantity of heat necessry to raise the temperature of 1 gram of water 1 degree Celcius at 15 degrees Celcius 1000 cal= 1 Cal |
Mega | 10^6 (1,000,000) M |
Kilo | 10^3 (1,000) K or k |
Deci | 10^-1 (1/10) d |
Centi | 10^-2 (1/100) c |
Milli | 10^-3 (1/1000) m |
Micro | 10^-6 (1/1,000,000) u |
Nano | 10^-9 (1/1,000,000,000) n |