Term
| What happens to the volume of ice when it melts? What happens to the mass? |
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Definition
| The volume decreases. The mass stays the same. |
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Term
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Definition
Amount of matter in something
How much space something takes up |
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Term
| How many plateaus are on a phase change graph? What are they? |
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Definition
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Term
| Based on chromatography, what is ink made up of? |
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Definition
| A liquid and solid containing four colors, blue, green, yellow, red. |
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Term
| Estimate ___ spaces past your measurement when reading scales. |
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Definition
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Term
| What is fractional crystallization used for and how is it performed? |
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Definition
| Used to seperate two solids soluable in the same liquid. Place solid in 2.5x that amount of water. heat until there is a precipitate. Filter using a hot water filter. Dry solid slowly and perform quantitative tests. |
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Term
| 5 body processes water is essential for. |
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Definition
| Growth, Digestion, Absorption, Circulation, Excretion |
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Term
| Some lakes have a lot of acid. This is bad. Some people spray lakes with limestone. How does this help and hurt the lake? |
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Definition
| Limestone is a base and neutrilizes the water but the process of neutrilization also creates salt |
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Term
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Definition
| A substance that can either speed up or slow down a chemical reaction. Does not undergo change, is not used up. |
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Term
| Why is there a shortage of drinking water? |
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Definition
| Only 3% of Earth's water is a fresh and of that, only 1% is available b/c the other 2% is trapped in polar caps or polluted. |
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Term
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Definition
Hydrochloric Acid
Stomach Acid
(Many answers) |
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Term
| Bases turn phenolphthalein _____. |
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Definition
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Term
| Neutralization is when ______ occurs. |
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Definition
| An acid and base combine to form salt and water. |
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Term
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Definition
| A unit of measurement that shows how much energy is needed to raise the temperature of 1 gram of water 1 degrees Celsius. |
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Term
| ___ depends on average kinetic energy. |
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Definition
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Term
| What surface will most readily deflect heat? |
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Definition
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Term
| As a liquid goes through a freezing phase change, what must happen to the heat energy? |
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Definition
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Term
| Unit used to measure length |
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Definition
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Term
Speed of particles in a...
Solid
Liquid
Gas |
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Definition
Solid: slowly vibrates in place
Liquid: Moving freely, moderate speed
Gas: Moving quickly |
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Term
| What side of the Hoffman Appartus did the hydrogen go to from the Electroysis of water? How do you know this? |
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Definition
| The left. There were two times as much stuff in it. And it reacted, popped, like hydrogen during the flame test. |
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Term
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Definition
The solute is dissolved in the solvent
*Water is the universal solvent |
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Term
| What is rubber sheeting used for? |
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Definition
| Rubber sheeting is used to cover up a test tube without plugging it, allowing for room for expansion. |
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Term
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Definition
Problem
Information
Hypothesis
Experiment
Record
Conclusion
*Either your hypothesis supports your conclusion or you go back, revise your hypothesis and try again |
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Term
| Acids are composed of _____ ions. |
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Definition
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Term
| Bases are composed of ___ ions. |
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Definition
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Term
| The pH scale is a concentration of __1__ scale? A lower number is more __2__. A higher number is more __3__. |
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Definition
1. Concentration of hydrogen
2. More acidic
3. More basic |
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Term
| Petroleum cannot easily be separated using fractional distillation because _____. |
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Definition
| The boiling points of the different substances in petroleum are too close together. |
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Term
| Insoluble solids with a greater density that water ___ in water. |
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Definition
| Sink Anything with a density >1 sinks in water .Water's density is 1. |
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Term
| Method for separating two gases and the property involved. |
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Definition
| Method: Chill until liquid. Use FD. BP is property involved. |
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Term
| Bases turn litmus paper ____. |
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Definition
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