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BIO UNIT 1 REVIEW
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| Term | Definition |
|---|---|
| specific heat | The amount of energy required to raise the temperature of 1 gram of a substance by 1 degree celcius |
| 11-14 | Strong bases have a pH of _____ |
| electron | negatively charged particle |
| nucleus | contains protons and neutrons |
| mass number | the sum of the number of neutrons and protons in an atomic nucleus |
| energy levels | Where are electrons found? |
| chemical properties | Valence electrons determine an atom's |
| share | Covalent bonds _____ electrons |
| high | Ionic compounds have ______ melting points |
| low | Covalent bonds have _______ melting points |
| nonmetals | covalent bonds form between |
| metals and nonmetals | form ionic bonds |
| crystal lattice | a three-dimensional geometric arrangement of particles |
| oxidation number | Positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable |
| cation | A positively charged ion |
| polarity | Molecules having uneven distribution of charges |
| hydrogen bond | Attraction between a slightly positive hydrogen atom and a slightly negative atom. |
| ion | charged, #p not equal #e |
| dipole | a pair of equal and oppositely charged or magnetized poles separated by a distance. |
| elevations | water boils at a higher rate at higher |
| cohesion | Attraction between molecules of the same substance |
| adhesion | An attraction between molecules of different substances |
| density | Mass per unit volume |
| solute | A substance that is dissolved in a solution. |
| solvent | A liquid substance capable of dissolving other substances |
| hydrogen | pH indicates the concentration of _____ ions |
| hydroxide ions | bases produce ___ when dissolved in water (OH-) |
| indicators | substances that have distinctly different colors in acidic and basic media |
| electrolytes | both acids and bases conduct electricity, so they are ______ |
| proton | positively charged particle |
| stable | compounds are |
| full valence | why do atoms form compounds |
| transfer | ionic bonds ____ electrons |
| anion | A negatively charged ion |
| atom | neutral charge, #p = #e, unstable |
| less | water is ____ dense as a solid |
| vaporization | The change of state from a liquid to a gas |
| homeostasis | the ability to maintain a stable internal environment |
| acid | pH less than 7 |
| base | pH greater than 7 |
| hydronium ion | Produced when acid dissolves in water. (H3O+) |
| corrosive | acids and bases are |
| sour | Acids taste |
| bitter | Bases taste |
| slippery | bases feel |
| 0-3 | a strong acid would have a pH of |
| do not | bases _____ dissociate completely |
| do not | acids ______ ionize completely |
| is not | strength ___ the same as concentration |
| blue | red litmus paper turns ____ when in base |
| red | blue litmus paper ____ turns when in acid |
| Phenolphthalein | Indicator which is clear in acidic solution and pink in basic solution. |
| buffers | weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH |
Created by:
niya.777
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