AP Measurement Flashcards
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| 4803109419 | matter | consists of individual atoms anything occupying space and having mass, material of universe | 0 | |
| 4803109420 | macroscopic world | the world that we can see | 1 | |
| 4803109421 | microscopic world | world of atoms and molecules | 2 | |
| 4803109422 | fundamental concepts of chemistry | - matter is composed of various types of atoms - one substance changes to another by reorganizing the way the atoms are attached to each other | 3 | |
| 4803109424 | theory | set of tested hypotheses that gives overall explanation of some natural phenomenon | 4 | |
| 4803109426 | law of conservation of mass | total mass is not affected by chemical change | 5 | |
| 4803109427 | mass | measure of resistance of object to a change in its state of motion | 6 | |
| 4803109428 | weight | response of mass to gravity, the force | 7 | |
| 4803109429 | accuracy | agreement of particular value with the true value | 8 | |
| 4803109430 | precision | degree of agreement among several measurements of same quantity (reproducibility) | 9 | |
| 4803109431 | random error | a measurement has equal probability of being high or low indeterminate error | 10 | |
| 4803109432 | systematic error | same direction each time, either always high or always low determinate error | 11 | |
| 4803109433 | Significant figures | nonzero integers: always count leading zeros: don't count captive zeros: always count trailing zeros: significant only if # contains decimal point exact numbers: infinite number multiplication and division: #of sig figs in limiting term addition and subtraction: # of decimal places in limiting term | 12 | |
| 4803109434 | meters | measure of length (IS) | 13 | |
| 4803109435 | kilograms | measure of mass (IS) | 14 | |
| 4803109436 | seconds | measure of time (IS) | 15 | |
| 4803109437 | amps | measure of electric current (IS) | 16 | |
| 4803109438 | kelvin | measure of temperature (IS) | 17 | |
| 4803109439 | candela | measure of luminous intensity (IS) | 18 | |
| 4803109440 | mole | measure of amount of substance (IS) | 19 | |
| 4803109441 | density | mass of a substance per unit volume of the substance a tool for identification of substances | 20 | |
| 4803109442 | solid | fixed volume and shape | 21 | |
| 4803109443 | liquid | definite volume but no specific shape | 22 | |
| 4803109444 | gas | no fixed volume or shape | 23 | |
| 4803109445 | homogenous mixtures | visibly indistinguishable parts solutions examples: air, wine, brass | 24 | |
| 4803109446 | heterogeneous mixtures | visibly distinguishable parts examples: sand in water, iced tea with ice | 25 | |
| 4803109447 | pure substances | with constant composition compounds or elements | 26 | |
| 4803109448 | physical changes | a change in the form of a substance, not in its chemical composition examples: boiling, freezing | 27 | |
| 4803109449 | distillation | method for separating components of mixture depends on differences in volatility (how readily substances become gases) | 28 | |
| 4803109450 | filtration | when mixture contains a solid and a liquid | 29 | |
| 4803109451 | chromatography | uses system with 2 states of matter: mobile and stationary | 30 | |
| 4803109452 | compounds | substances with constant composition that can be broken down into elements by chemical processes | 31 | |
| 4803109453 | chemical change | a given substance becomes a new substance or substances with different properties and different composition | 32 | |
| 4803109454 | elements | substances that can't be decomposed into simpler substances by chemical or physical means | 33 | |
| 4803109455 | Kelvin and Celsius |  | 34 | |
| 4803109456 | Celsius and Fahrenheit |  | 35 |