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| a feature or quality that makes an organism (or item) recognizable or unique |
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| the strength of a solution; the ammount of substance dissolved in another (bleach in the bottle is concentrated) |
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| variable that is tested...on the x axis |
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| something whose quantity (amount) changes as a result of change made to independent variable) for example...as time increases you can walk farther (increase in distance) |
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| organisms made up of many cells - like plants and animals |
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| look at the evidence to come up with a conclusion (for example: if a soccer player is on the ground during the game, you can INFER that he was fouled or is faking a foul and NOT that he slipped on a banana peel) |
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| non-living part or factor (like your shoe) |
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| living factor or part of an environment (plants or animals) |
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| make their own food (like plants, grass, etc.) |
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| a symbiotic relationship in which one species benefits and the other is neither hurt or harmed |
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| cells of an organism HAS a nucleus (animals, plants, fish...) |
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| bacteria and fungi that breakdown waste material from organisms and remains of dead organisms |
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| energy from the sun - no waste is created but, you can only get energy when the sun is out! |
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| can create a lot of toxic waste, like in car exhaust and chemical plants, and can cause acid rain |
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| can be dangerous if there is a radiation leak (like in the tsunami in Japan) |
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| doesn't cause any pollution but, kills a ton of birds when they fly into the wind turbine! |
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| a diagram that shows how much energy is available to organisms in each part of a food web (only 10% moves on to next level) |
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| organisms that cannot make their own food and fed on other organisms (like cows eat grass...) |
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| when one species feeds off of another |
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| a symbiotic relationship in which one species benefits and the other is harmed |
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| an organism that feeds on plants to gain energy (ex: a mouse that eats grass) |
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| organisms whose cells do not have a nucleus (bacteria) |
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| heat transfer through direct contact or through a solid |
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| transfer of heat through movement of a fluid (liquid or gas) like when warm air rises when you lift the lid off a pot |
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| what a wave or heat energy travels through (ex: air, water, the ground) |
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| the substance that is being dissolved (like the sugar you pour into your iced tea) |
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| a mixture made when a solvent dissolves a solute. dissolving is NOT a chemical reaction |
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| fanning or wafting when a chemical reaction takes place in a beaker |
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| so that you don't breathe in the vapors (gases produced from the reaction) - protects your respiratory tract |
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| safest way to dilute a concentrated sulfuric acid solution |
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| dilute (water down) - add the acid to a small amount of water SLOWLY while stirring |
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| have a pH of 1-6: 1 is the strongest! |
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| have a pH of 8-14: 14 is the strongest! |
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| has the directions (DNA) to make proteins |
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| found in the cytoplasm of a eukaryotic cell - synthesize make) proteins |
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| converts energy stored in food into ATP, energy that drives a cell's activities |
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| bond between a metal and a non-metal |
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| to decrease viscosity (thickness) |
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| left of zigzag line, LOSE electrons |
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| right of xig zag line, GAIN electrons |
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| increase solubility of a gas |
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| decrease temperature of solvent; molecules will have less KE and gas will stay better dissolved in the liquid (solvent) |
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| increase solubility of a solid |
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| increase temperature of solvent; stirring |
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| A change in the direction of a wave as it bounces off a surface |
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| The bending of a wave as it enters a new medium and changes its speed |
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| The spreading of waves through or around a barrier |
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| Vibration - like a tuning fork or when your car windows vibrate when a car has their music too loud |
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| Wafting or fanning a small amount of chemical vapors |
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| protects the respiratory tract |
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| the safest way to dilute concentrated sulfuric acid |
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| add acid ro water while stirring |
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| for safety reasons, the label that would be most important on a reagent bottle... |
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NaOH pH = 11
This tells you that it was a strong base. "prepared on april 12" doesn't tell you anything! |
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| never take off your goggles unless... |
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| the lab is completely cleaned up! |
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| most accurate equipment for measuring a substance |
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pipette!
the graduated cylinder is also accurate BUT pipette is a better choice! |
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| read the volume before an object is put in the graduated cylinder, drop object in, read again and then subtract. This will give you the volume |
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