| A | B |
|---|
| ATOMS | SMALLEST UNIT OF MATTER WITH PROPERTIES OF SINGLE ELEMENT |
| ELEMENT | PURE SUBSTANCE OF ONE TYPE OF ATOM |
| COMPOUND | 2 OR MORE SUBSTANCES CHEMICALLY COMBINED |
| NUCLEUS | center of an atom; made up of protons and neutrons |
| ATOMIC MASS | weighted average mass of element's isotopes |
| ISOTOPE | variation of an element that has the same number of protons but different number of neutrons |
| MENDELEEV | father of periodic table: determined the relationship of elements to organize them into a table |
| MOSLEY | determined the atomic number NOT atomic weight determined order of elements in the periodic table |
| ELECTRON | NEGATIVELY CHARGED SUBATOMIC PARTICLE |
| ATOMS | SMALLEST UNIT OF MATTER WITH PROPERTIES OF SINGLE ELEMENT |
| ELEMENT | PURE SUBSTANCE OF ONE TYPE OF ATOM |
| SUBATOMIC PARTICLES | PARTICFLES THAT MAKEUP AN ATOM |
| PROTONS | POSITIVE ATOMIC PARTICLE FOUND IN THE NUCLEUS |
| NEUTRONS | NEUTRALLY CHARGED PARTICLE FOUND IN THE NUCLEUS |
| ELECTRONS | NEGATIVE ATOMIC PARTICLES FOUND SURROUNDING THE NUCLEUS |
| ATOMS | smallest constituent unit of ordinary matter that has the properties of a chemical element. |
| ELEMENT | PURE SUBSTANCE OF ONE KIND OF ATOM |
| NUCLEUS | center of an atom; made up of protons and neutrons |
| PERIODIC LAW | properties of elements tend to repeat in a regular pattern when elements are arranged in order of increasing atomic number |
| METALS | grouped on left side of periodic table; elements are shiny and conduct heat and electricity |
| NONMETALS | elements that are poor conductors of heat and electricity; grouped on the right side of periodic table |
| METALLOIDS | elements that have properties of metals and nonmetals |
| ELECTRON CLOUD | current theory or model of the atom where electrons move three dimensionally within a given area |
| ATOMIC MASS | weighted average mass of element's isotopes |
| MENDELEEV | father of periodic table: determined the relationship of elements to organize them into a table |
| MOSLEY | determined the atomic number NOT atomic weight determined order of elements in the periodic table |
| QUARK | tiny particles that make up protons & neutrons |
| FLAVORS OF QUARKS | up, down, strange, charm, bottom, and top |
| HADRONS | composite particles made of quarks |
| PERIODIC TABLE | A table in which the chemical elements are arranged in order of increasing atomic number. |
| MASS NUMBER | whole number that is the combination of protons and neutrons |
| METALS | Large group of elements that tend to be solids at room temp, good conductors of heat and electricity, malleable, ductile, and lustrous |
| NON METALS | Group of elements that may be solids, liquids, or gases at room temp and tend to be poor conductors of heat and electricity, and NOT malleable, ductile, or lustrous |
| ISOTOPE | atoms of the same element that differ in mass |
| negative | charge on an electron |
| mass number = 11 (protons + neutrons) | Determine the mass number if there are 5 protons, 5 electrons, and 6 neutrons |
| positive | charge of a proton |
| 6 (protons + neutrons = mass number) | If the mass number is 11 and there are 5 protons, how many neutrons? |
| QUARK | Particles of matter that make up protons and neutrons |
| 0 (neutral) | charge of a neutron |
| TEVATRON | Machine used to study quarks |
| Quark in a Neutron | 1 up quark and 2 down quark. |
| Quark in a Proton | 2 up quark and 1 down quark. |
| 3 | How many quarks make up a proton and a neutron |
| Top, bottom, charm and strange | What quarks don't make up matter and only exist at extraordinary temperatures |
| HADRONS | Quarks combine to form ____ |
| FLAVORS | types of quarks are called ____ |
| UP & DOWN | quarks found naturally; do not need special circumstances to exist. |
