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19 Cards in this Set
- Front
- Back
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Three particles of an atom |
1. Proton - positive charge, same number as electrons, make up nucleus. 2. Neutrons - neutral charge, Atomic mass = number of neutrons, make up nucleus. 3. Electrons - negative charge, surrounds atoms nucleus. |
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What happens when NaOH and HCl are dissolved in water |
NaOH+HCl = Salt(NaCl)+H2O |
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PH Scale |
1-14, 7 is neutral
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Logorithmic |
PH Scale is logarithmic, 1 - 2 - 3 - 4... x10 x10 x10 |
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Role of Enzymes in living things |
change the rate of chemical reactions in the body |
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Importance of water in living things |
All chemical processes occur in water(in living things) |
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Water molecule's structure |
H2O |
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Special properties of water |
- expands when frozen - freezes from the top first |
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Dehydration Synthesis |
The making of something by losing water in the equation |
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Hydrolysis |
The making of something by adding water to the equation |
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Substances that are acids |
PH under 7, vinegar, HCl... |
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Substances that are bases |
PH over 7, soap, NaOH, ammonia… |
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What happens when acids and bases are a) mixed together b) placed in water |
a) Produce Salt b) Produce Water |
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Chemical activity of an atom is determined by... |
electron arrangement |
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Metals vs. Non-metals |
Metals - lose electrons Non-metals - gain electrons |
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Cation vs. Anion |
Cation - ion with positive charge Anion - ion with negative charge |
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Characteristics of Acids |
Sour, PH under 7 |
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Characteristics of Bases |
Bitter, PH over 7 |
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Saturated vs. Unsaturated Fats |
Saturated Fat - Fully surrounded and unable to connect with other substances Unsaturated Fat - Open to mixing with other substances |
