| Term | Definition |
|---|
| proton | positive particle found in the nucleus of an atom |
| neutron | neutral partical found in the nucleus of an atom |
| electron | negative particle moving outside the nucleus of an atom |
| element | substance made of only one kind of atom |
| compound | substance made of two or more kinds of atoms that are chemically joined |
| symbol | one or two letter that represent an element |
| formula | combination of numbers and symbols that show exactly what makes up a chemical compound |
| ion | atom that has an electric charge due to losing or gaining electrons |
| mixture | combination of substances in which each substance retains its own properties (not chemically joined) |
| solution | type of mixture in which the substances are evenly mixed |
| suspension | type of mixture in which some substances will eventually settle out |
| organic compound | contain carbon and hydrogen and are associated with something that is or once was living |
| carbohydrates | organic molecules found in sugars and starches |
| lipids | organic molecules that store very large amounts of energy |
| amino acids | building blocks of protein molecules |
| enzymes | special proteins that regulate the speed of chemical reactions |
| nucleic acids | special proteins that store important coded information (DNA and RND) |
| water | inorganic compound that makes up 50% of living things |
| semi-permeable | allows only certain things to pass through |
| passive transport | movement of materials through the cell membrane without the use of energy |
| diffusion | random movement of materials from an area where there are many to where there are few |
| osmosis | diffusion of water through the cell membrane |
| active transport | movement of materials through the cell membrane that requires energy |
| endocytosis | process that allows large molecules to enter the cell by surrounding it by the cell membrane |
| exocytosis | releasing materials from the cell by expelling the contents of a vesicle |
| metabolism | all of the chemical reactions that occur in an organism |
| producers | organisms that can make food |
| consumers | organisms that cannot make their own food |
| photosysthesis | process that uses light enery to make glucose |
| chlorophyll | green pigment that captures light energy used to make food |
| respiration | process that releases stored energy from food in the presence of oxygen |
| fermentation | process that releases energy from food that does not require oxygen |
Combine with other sets
Share on Facebook
Share on MySpace