Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
OPW Test 3
Our Physical World Test Three
| Question | Answer |
|---|---|
| Dilute | Little solute in lots of solvent |
| Absolute Zero | Theoretical temperature at which motion of particles ceases |
| Base | Produces OH |
| g/100cm^3 of Water | Unit of Solubility |
| Solute | Is dissolved, usually less |
| Precipitate | Solid separated from a solition |
| "Salt" | Produced by the reaction of an acid and a base |
| Mole | 6.022 x 10^23 |
| Chemical Change | Elements are rearranged, new substances are produced |
| Calorie | Unit of Energy |
| What is the difference between an atom and an ion? | Atoms are the main building blocks of matter while ions are atoms that have gained or lost electrons. |
| What is the difference between a molecule and an atom? | Atoms are the main building blocks of matter and molecules are two or more atoms that are chemically combined. |
| Describe a difference between a scientific law and a scientific theory. | Scientific laws are things that scientists believe are true while scientific theories are more accurate as well as more likely to be true. |
| How do the isotopes of elements differ from one another? | Isotopes are the same element but hold a different number of neutrons. So C12 is carbon with 12 neutrons while C14 is Carbon with 14 neutrons. |
| Use the Kinetic Theory of Matter to explain why food coloring diffuses faster in warm water than in cold water. | In the warmer water the particles are moving faster and so it takes much less time for the color to diffuse. |
| Use the Kinetic Theory of Matter to explain why evaporation removes heat. | Particles use energy to evaporate so when the energy is lost the heat also is. |
| Use the Kinetic Theory of Matter to explain how a thermometer works. | When it is placed in a warm substance the particles heat up and begin moving. When these particles move the volume increases causing the red line to go up the tube and a higher temperature to be read. |
| Use the Kinetic Theory of Matter to explain why it takes 80 calories per gram to change H2O from solid to liquid and 540 colories per gram to change H2O from liquid to a gas. | It takes larger to change H2O to from a liquid to a gas because it requires more energy due to the particles moving faster. |
| Generally what happens to the amount of solute and the amount of precipitate as the solution is warmed? | When a solution is warmed, the amount of solute increases and the amount of precipitate decreases. |
| Scientific World View | The world is understandable. Scientific ideas are subject to change. Scientific knowledge is durable. Science cannot provide complete answers to all questions. |
| Scientific Inquiry | Science demands evidence. Science is a blend of logic and imagination. Science explains and predicts. Scientists try to identify and avoid bias. Science is not authoritarian. |
| Scientific Enterprise | Science is a complex social activity. Science is organized into content disciplines and is conducted in various institutions. There are generally accpeted ethical principles in the conduct of science. |
| Independent Variable | Not affected by other variables. It is independent. |
| Dependent Variable | Depends on other variables. |
| Constant | Remains the same with each trial of the experiment. It acts as something that the data can bbe compared with. |
| concentrated | lots of solute in little solvent |
| solvent | does the dissolving, usually more |
| indicator | illustrates acid, base, neutral by color |
| boiling point | change from liquid to gas temperature |
Created by:
bschult3
Popular Physical Science sets