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chem 2210 cp 1.2
| Question | Answer |
|---|---|
| a greek philosopher who thought that the best way to learn about reality was not through the senses, but through reason | Plati (427-347BCE) |
| a physician and an alchemist who thought that alchemy should be about preparing new medicines | Paracelsus ( 1493 - 1541) |
| a french chemist who studied combustion, made careful measurements of the mass of objects before and after burning them in closed containers | antoine lavoisier (1743 - 1794 ) |
| a statement based on direct experience | fact |
| a statement that is proposed, without actual proof, to explain a set of facts or their relationship | hypothesis |
| the formulation of an apparent relationship among certain observed phenomena, which has been verified to come extent | theory |
| the process of observation, hypothesis, and experimentation used to expand a body of knowledge | scientific method |
| observations that are descriptions of what you observe | qualitative |
| observations that are measurements that include both a number and a unit | quantitative |
| a concise statement of a relationship between phenomena that is always the same under the same conditions | law |
| mass, volume, temperature, density, and other physical properties are called ______ | physical quantities |
| a defined quantity used as a standard of measurment | unit |
| (SI) mass is measured in | kilograms (kg) |
| (SI) length is measured in | meters (m) |
| (SI) volume is measured in | cubic meters (m^3) |
| (SI) temperature is measured in | kelvins (k) |
| (SI) time is measured in | seconds (s) |
| (MS) mass is measured in | grams (g) |
| (MS) length is measured in | meters (m) |
| (MS) time is measured in | seconds (s or sec) |
| (MS) temperature is measured in | degrees Celcius (c) or Kelvins (K) |
| (MS) amount of a substance | mole (mol) |
| (MS) volume is measured in | cubic centimeters (cc or cm^3) or liter (l) |
| writing a number as the product of a number between 1 and 10 multiplied by 10 raised to some power | scientific notation |
| a measure of the amount of matter in an object | mass |
| a measure of the gravitational force that the earth or other large body exerts on an object | weight |
| the volume of a cube whose dimensions are 1 cm on each side | cubic centimeter |
| a ratio of equivalent quantities used to express a quantity in different units | conversion factor |
| counted or given by definition | exact |
| numbers depends on how they were determined | inexact (measured) |
| have no uncertainty associated with them | exact numbers |
| the recorded digits, both certain and uncertain | significant figures |
Created by:
mt443417
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