| Question |
Answer |
| acid | any substance that forms hydrogen ion in water |
| atom | the smallest particle of an element that has the characteristics of the element |
| base | any substance that forms hydroxide ions in water |
| compound | substance composed of atoms of two or more different elements that are chemically combined |
| covalent bond | the force that holds 2 atoms together |
| element | substance that can't be broken down into simpler chemical substances |
| ion | charged particle |
| ionic bond | attractive force between two ions of opposite charge |
| isotope | atoms of the same element that have different numbers of neutrons |
| metabolism | all of the chemical reactions that occur within an organism |
| mixture | combination of substances in which that individual components retain their own properties |
| molecule | group of atoms held by covalent bonds and having no overall charge |
| nucleus | center of an atom |
| PH | measure of how acidic or basic a solution is |
| solution | mixture in which one or more substances are distributed evenly in another substances |
| diffusion | net movement of particle from an area of higher concentration eventually resulting in distribution |
| dynamic equilibrium | continues movement but no overall concentration change |
| hydrogen bond | a weak bond caused by the attraction of opposite charges |
| polar molecule | molecule with an unequal distribution of charge |
| amino acid | basic building blocks of proteins |
| carbohydrate | organic compound composed of carbon, hydrogen, and oxygen with a ration of about two hydrogen atoms and one oxygen atom |
| enzyme | protein that changes the rate of a chemical reaction |
| isomer | compounds that have the same simple formula but different three dimensional structures |
| lipid | organic compounds that have a large proportion of CH bonds and less oxygen than carbohydrates |
| nucleic acid | a complex macro molecule that stores cellular information in the form of a code |
| peptide bond | covalent bond formed between the amino acids |
| polymer | large molecule formed with smaller molecules |
| protein | large complex polymer composed of carbon, hydrogen, oxygen, nitrogen, and usually sulfur |
Science Vocab 147928
