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Chapter test f/c
Ch6 f/c
| Question | Answer |
|---|---|
| PRHPMEDOCT | problem research hypothesis procedure experiment data observations conclusion theory |
| matter | anything that takes up space and has mass matter is made up of atoms |
| model | a mental picture or figure |
| proton | a subatomic particle with a positive charge found in the nucleus of an atom |
| neutron | a subatomic particle with a neutral charge found in the nucleus of an atom |
| electron | a subatomic particle with a negative charge moving around the nucleus |
| Bohr model of an atom | an atomic model in which the electrons move around the nucleus in orbits developed by Neils Bohr, a Danish scientist. |
| elements | made up-up of one type of atom |
| atomic number | the number of protons in an atom |
| family | a group of elements found vertically on the periodic table having similar characteristics |
| the periodic table | the table that contains info about elements arranged by atomic number. |
| metals | shiny can be shaped good conductors of heat and electricity |
| nonmetals | dull can't be shaped not conductors of heat and electricity |
| semimetals | share characteristics of both metals and nonmetals |
| noble gases | dont combine easily with other elements |
| energy levels | the number of electrons in each level of an atom |
| compound | substance formed when two or more elements combine chemically and form a new substance |
| chemical bond | forces that hold atoms together in a compound |
| ion | atoms that have lost or gained an electron |
| molecule | particle formed by sharing electrons |
| chemical formula | a group of symbols that represent the elements in a compound |
| chemical symbol | a letter that stands for the name of an element |
| organic compounds | any compound that contains carbon |
| organisms | any living thing |
| hydrocarbon | any compound that contains only hydrogen and carbon |
| polymer | an organic compound made of a chain of carbon atoms |
| indicator | a dye which changes color when mixed with an acid or a base |
| acid | a compound that turns blue litmus red and has a pH of 0-6 |
| base | a compound that turns red litmus blue and has a pH of 8-14 |
| mono | one |
| di | two |
| tri | three |
| tetra | four |
| h2o | water |
| co2 | carbon dioxide |
| NaCl | sodium chloride |
| CO | carbon monoxide- dangerous |
| nh3 | ammonia- dangerous |
| so2 | sulfur dioxide-dangerous |
| pH of 7= | neutral |
| salts | formed when an acid is combined with a base |
| neutralization | a chemical change when an acid is combined with a base neutralizing the acid and forming a salt and water |
| hydrogen | h |
| carbon | c |
| oxygen | o |
| neon | ne |
| sodium | na |
| magnesium | mg |
| aluminum | al |
| sulfur | s |
| calcium | ca |
| colbalt | co |
| copper | cu |
| tungsten | w |
| tin | sn |
| gold | au |
| mercury | hg |
| lead | pb |
| uranium | u |
| helium | he |
| nitrogen | n |
| neon | ne |
| magnesium | mg |
| silicon | si |
| chlorine | cl |
| iron | fe |
| zinc | zn |
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