| Term description | |
|---|
| Smallest part of an element that can still retain the properties of that element. | |
| These make up the atom, and they are protons, neutrons, and electrons. | |
| This subatomic particle is in the nucleus of the atom, and has a positive charge. | |
| This subatomic particle is in the nucleus of the atom, and has a neutral charge, | |
| This subatomic particle circles the nucleus of an atom in a motion called an orbital. It has a negative charge. It also has no mass. | |
| A particle that makes up a proton or neutron, it comes in 6 different flavors. (Sounds like ice cream!) | |
| Number of protons an element has in its atomic state. | |
| The sum of the number of protons and neutrons an element has in its atomic state. | |
| A unifying scientific explanation supported by testing. | |
| The center of an atom, made of protons and neutrons | |
| Atoms with the same number of protons but different numbers of neutrons. | |
| Representation of an object or system. | |
| Region around an atom's nucleus in which electrons are likely to be found. | |
| An SI unit used to express the mass of atomic particles | |
| A word meaning 'smaller than an atom' | |
| A substance formed by 2 elements. | |
| | Term description | |
|---|
| An early 19th century chemis who helped to advance the belief in the existence of atoms. | |
| In 1809, he reported that the hydrogen reacting with oxygen to form water occupied 2× as much volume as the oxygen. | |
| Furthered the understanding of the correct chemical formulas and atomic masses. | |
| Articulated the Law of Definite Proportions in 1799. | |
| Discovered the nucleus of the atom in 1911. | |
| Greek philosopher and scientist who argued that all matter was consisted of four elements: Air, Earth, Fire, and Water. | |
| Greek who first came up with the idea of 'atomos', which means 'indivisible', and he suggested that atomos were specific to the material they made up. | |
| Greek philosopher who accepted the theory of Empedocles, and added his own idea that the 4 elements could be changed to one another, he set back science almost 2000 years. | |
| Italian mathematician who showed that air had weight, and invented the barometer. | |
| Swiss mathematician who developed a theory that air and other gases consist of tiny particles that are too small to be seen. | |
| English scientist who experimented with mercury calx in 1773, and discovered oxygen. | |
| Frenchman who named oxygen. | |
| Proposed a new definition of an element in around 1660. | |
| Discovered, in 1886, that atoms have positive charges. | |
| Discovered the neutron of the atom in 1932. | |
| Danish physicist that proposed that electrons do not move freely, rather they move in precise steps now known as energy levels. | |
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Periodic Table
Multiplication Table
Minute Math (Addition)
