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Chemistry Q1
Chapter One
| Question | Answer |
|---|---|
| define chemistry | the study of the nature of matter and the changes that matter undergoes |
| define matter | anything that possesses mass and occupies space |
| what is the "nature of matter?" | the composition of a particular kind of matter,the forces holding its parts together,and its observable properties |
| define physical change | physical change does not cause a change in the chemical composition of a material |
| examples of physical change | water that goest from freezing, melting, boiling...always remains water |
| define chemical change | chemical change results in the formation of new substances |
| examples of chemical change | embalming to slow decomposition,decomposition of human remains,creamation |
| define energy | the ability to do work |
| define kinetic energy | energy in motion |
| examples of kinetic energy | water falling,electricity flowing |
| define potential energy | energy stored |
| examples of potential energy | engergy stored in a battery,a drawn rubber band |
| define inorganic chemistry | study of compounds usually containing elements other than carbon |
| define organic chemistry | study of certain carbon compounds |
| define biochemistry | study of compounds produced by living organisms |
| define embalming chemistry | study of those types of matter and changes related to the disinfection and preservation of human remains |
| define thanatochemistry | study of physical and chemical changes in the human body cause 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) |
| standard unit of volume | liter (L) |
| standard unit of mass | kilogram (kg) |
| standard unit of heat | calorie (cal) |
| define calorie | the standard unit of heat |
| define Calorie | one kilocalorie = 1000 calories = one Cal |
| Mega | M 10/6 |
| Kilo | k 10/3 |
| Deci | d 10-1 |
| Centi | c 10-2 |
| Milli | m 10-3 |
| Micro | u 10-6 |
| Nano | n 10-9 |
| define law of conservation of mass | matter is neither created nor destroyed |
| define law of conservation of energy | energy is neither created nor destroyed |
Created by:
lisa baxter
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