chem 105 – Chemistry – Flashcards
Unlock all answers in this set
Unlock answersquestion
| Si Units m |
answer
| meter, length |
question
| Si unit kg |
answer
| kilogram mass |
question
| Si unit s |
answer
| second time |
question
| Si unit A |
answer
| ampere electrical current |
question
| si unit K |
answer
| kelvin temp |
question
| mol |
answer
| mole amount of substance |
question
| cd |
answer
| candela luminosity intensity |
question
| prefixes for meters T |
answer
| Terameter 1x10^12 or 1000000000000meters |
question
| prefixes for meters G |
answer
| Gigameter 1x10^9 or 1000000000meters |
question
| prefixes for meter m |
answer
| mega 1x10^6 or 1000000meters |
question
| prefixes for meter k |
answer
| kilometer 1x10^3 or 1000meters |
question
| prefixes for meter d |
answer
| decimeter 1x10^-1 or 0.1meter |
question
| prefix for meter c |
answer
| centimeter 1x10^-2 or 0.01 meter |
question
| prefix for meter m |
answer
| milimeter 1x10^-3 or 0.001 meter |
question
| prefix for meter u |
answer
| micrometer 1x10^-6 or 0.000001meter |
question
| prefix for meter n |
answer
nanometer 1x10^-9 or0.000,000,001meter billionth of a meter |
question
| prefix for meter p |
answer
| picomiter 1x10^-12 or 0.000000000001 meter |
question
| extensive properties |
answer
| depends on how much of something, length, weight |
question
| intensive properties |
answer
| does not depend on how much of something temperature density |
question
| if mass=301 g volume =15.6 cm^3 what is density? |
answer
| d=(301g)/(15.6cm)=19.3 g/cm^3 |
question
| density=1.41g volume=242mL mass? |
answer
| d*v=m 341.22g |
question
| Farenheit to celcius 40 F=? |
answer
| yC=(xF-32)(5C/9F) yC=(40F-32)(5C/9F) yC=8F(5C/9F) yC=40/9C |
question
| Celcius to Farenheit 20 C=? |
answer
| yF=(9F/5C)(xC)+32F yF=(9F/5C)(20C)+32F yF=180F/5+32F yF=36F+32F yF=68F |
question
| 1.12what does each of the following describe a chemical change or a physical change at the helium gas inside a balloon tends to leak ou after a few hours b a flash light beam slowly gets dimmer and finally goes out after a few hours c frozen orange juice is reconstituted my adding wear to it d the forth of plants depends on the suns energy in a process called photosynthesis e a spoonful of table sale dissolves in a bowl of soup |
answer
| a physical change b chemical change c physical change d chemical change e physical change |
question
| 1.14 give the chemical symbol for the following elements a cesium b germanium c gallium d strontium e uranium f selenium g neon h cadmium |
answer
| a Cs b Ge c Ga d Sr e U f Se g Ne h Cd |
question
| 1.16 classify each of the following as an element a compound a homogenous mixture or a heterogeneous mixture a water from a well b argon gas c sucrose d a bottle of red wine e chicken noodle soup g blood flowing in a capillary g ozone |
answer
| a homo b element c compound d homo e hetero f hetero g element |
question
| 1.22 the density of a methanol a colorless organic liquid used as a solvent is 0.7918 g/ml calculate the mass of 89.9 mL of the liquid |
answer
| 71.2g |
question
| a formally the human body can endure a temperature of 105 for only short periods of time without permanent damage to the brain and other vital organs what is the temperature in degrees Celsius |
answer
| 41C |
question
| ethylene glycol is a liquid organic compound that is used as an antifreeze in radiator it freezes at -11.5 C calculate its freezing temperature in degrees F |
answer
| 11.3 F |
question
| the temperature on the surface of the sun is about 6300 C what is the ten in F |
answer
| 1.1x10^4 F |
question
| the ignition of a paper is 451 F what is the C |
answer
| 233C |
question
| Convert the following into C a 77k b 4.2 K c 601 K |
answer
| a -196 C b -296 C c 328 C |
question
| express the following numbers as decimals 1.52x10^-2, b7.78x10^-8 |
answer
| a 0.0152 b 0.0000000778 |
