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15 Cards in this Set
- Front
- Back
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If you have a mixture of three liquids and you were using distillation to separate them, how would you know which order would you be able to collect each of the liquids in? |
Its all based on the Boiling point, Lowest temperature 1st and highest temperature last. |
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Compare and contrast Elements and componds |
Elements- are one type of atoms Compound- are two or more, types of atoms bonded together. |
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Protons |
Atomic number |
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Neutrons |
Atomic weight |
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electrons |
the same number as protons |
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Proton charge, electron charge, neutron charge |
Protons(+) electrons(-) Neutrons (Neutral) |
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How does water dissolve a salt like NaCl? |
Draw water molecules, oxygen is negative charge so draw it attracted to the Na, and The hydrogen attracted to the Cl since its pawwwsitive. |
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what is the proper way to write chemical formulas for ionic compounds? |
Cation 1st, anion 2nd make sure charges balance out. |
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what is the reference solution and what was it importance in the water testing lab? what was the control? |
Reference- a solution containing the ion in question. it shows what a positive test result looks like. Control- usually distilled water, shows a negative result. |
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You add 76 grams of sugar to 304 grams of water. what is the percent concentration? |
76g/304+76+0.2 -20% |
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what are some ways you can increase the speed of a substance dissolving? |
To help dissolve Solids: stir,heat, and add more solvent. |
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how does solubility of a solid and solubility of a gas differ? |
For solids: temperature rises, solubility rises For gases: temperature rises, solubility decreases |
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What is DO and why is it important? |
DO is Dissolve oxygen, its important because fish need DO to breathe underwater. |
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Compare and contrast ionic compounds to polar and non polar molecules. |
Water molecule is polar, it has both positive and negative charges. Non polar is when there is only one type of charge. |
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what is meant by " like dissolves like"? |
Ionic compounds are polar because the have (+) cations and negative anions, making it easy to dissolve water, which is polar but not ionic. Ionic compound must be composed of a cation and a anion. |
