Terms : Hide Images
| 8091403600 | endothermic | a chemical reaction that absorbs more energy than i release;products have a higher bond energy than reactants | 0 | |
| 8091410506 | hydrogen bond | an attraction between a slightly positive hydrogen atom and a slightly negative atom,such as oxygen and nitrogen |  | 1 |
| 8091426663 | nucleic acid | the type of molecule that stores genetic information in living things; such as DNA and RNA. Made up of a sugar, phosphate group, and nitrogen base |  | 2 |
| 8091440319 | bond energy | the amount of energy needed to break a chemical bond;the amount of energy released when a bond forms | 3 | |
| 8091447525 | solution | a certain type of mixture; formed when one substance, such as water, dissolves other substances | 4 | |
| 8091453695 | enzyme | allows chemical reactions to take place under the tightly controlled conditions in living things. in almost all cases-protein |  | 5 |
| 8091467886 | compound | chemical bonds hold together; always contain atoms of more than one element | 6 | |
| 8091472797 | fatty acid | carbon chain found in many lipids; can be either saturated or unsaturated |  | 7 |
| 8091484090 | ion | has a positive charge if loses an electron or a negative charge when loses an electron | 8 | |
| 8091493874 | substrate | a reactant an enzyme acts on; bind to an enzyme's active site | 9 | |
| 8091504823 | protein | many different types have many different functions in living things; made of amino acids |  | 10 |
| 8091511251 | pH | the measure of the hydrogen ion concentration in a solution; low solution is very acidic | 11 | |
| 8091516537 | activation energy | the amount of energy that is needed for a chemical reaction to start; after added, the reaction can take place on its own | 12 | |
| 8091521165 | molecule | held together by covalent bonds; can be made of atoms of just one element | 13 | |
| 8091525304 | isotope | an atom of the same element that has the same number of protons, but a different number of neutrons | 14 | |
| 8091528041 | what charge do protons have? | positive charge | 15 | |
| 8091529144 | what charge do electrons have? | negative charge | 16 | |
| 8091530304 | what charge do neutrons have? | neutral charge | 17 | |
| 8091531859 | polarity | unequal sharing of electrons | 18 | |
| 8091533953 | atom | the smallest unit of matter | 19 | |
| 8091537860 | valence shell | the outermost shell | 20 | |
| 8091544483 | what are the elements commonly found in organisms? | carbon and nitrogen | 21 | |
| 8091546742 | atomic mass | the sum total of protons and neutrons | 22 | |
| 8091548788 | covalent bond | non-metal elements share electrons to complete outer shells | 23 | |
| 8091554080 | ionic bond | metal and nonmetal elements lose/gain electrons to complete outer shells | 24 | |
| 8091557921 | properties of water (7) | 1. polar 2. cohesion 3. surface tension 4. expands when frozen 5. adhesion 6. capillary action 7. resists temperature changes | 25 | |
| 8091576290 | polar covalent bond | bond between oxygen and hydrogen atoms in water |  | 26 |
| 8091578439 | cohesion | the ability of a molecule to stick to other molecules of the same kind (water molecules stick to other water molecules) |  | 27 |
| 8091585924 | surface tension | a "skin" on water ex: insects on water paperclip on water |  | 28 |
| 8091589730 | adhesion | the ability of a molecule to stick to another different molecule ex: water on the sides of a straw |  | 29 |
| 8091597380 | capillary action | a liquid moving upward and defying gravity ex: water molecules moving up a plant | 30 | |
| 8091601007 | why can ice float in water? | ice is less dense than water due to hollow spaces in ice | 31 | |
| 8091603688 | mixture | two or more elements combined | 32 | |
| 8091606593 | solvent | part that is doing the dissolving ex: water | 33 | |
| 8091607373 | solute | part being dissolved ex: kool aid powder | 34 | |
| 8091613814 | monomer for protein | amino acid | 35 | |
| 8091614751 | function of a lipid | used to store energy in living things | 36 | |
| 8091616289 | pH of 7 | neutral | 37 | |
| 8091620790 | an example of a nucleic acid | DNA and RNA | 38 | |
| 8091622631 | molecule that contains carbon, hydrogen, and oxygen | carbohydrates | 39 | |
| 8091624488 | pH greater than 7 (OH-) | base | 40 | |
| 8091628807 | made up of nucleotides | nucleic acid | 41 | |
| 8091630088 | function of a carbohydrate | main source of short-term energy for living things | 42 | |
| 8091632762 | monomer of a lipid | 3 fatty acids and glycerol | 43 | |
| 8091633405 | function of a protein | helps transport substances into or out of cells | 44 | |
| 8091635680 | function of nucleic acids | store/transmit hereditary information | 45 | |
| 8091643586 | molecule that contains carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur | protein | 46 | |
| 8091647257 | has a pH of 0-7 (H+) | acid | 47 | |
| 8091651298 | example of carbohydrate | sugar (-ose) | 48 | |
| 8091652973 | example of a lipid | olive oil | 49 | |
| 8091655793 | monomer of carbohydrates | monosaccharides | 50 |
