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| ______ is anything that has _____ and takes up space | matter, mass |
| basic stable matter is made up of tiny particles called | atoms |
| an atom consists of dense nucleus of even small particles called ______________,____________ surrounded by a cloud of | protons and neutrons electrons |
| atom are mostly empty space | true |
| atomic number | protons |
| atomic mass | protons and neutrons added together |
| all atoms in one element contain the _______________ number of __________ | exact same protons |
| what are the two basic types of properties for matter | physical, chemical |
| physical propties have | density, melting point, boiling point, |
| chemical have | chemical reactivity, and are determined by the electrons in the electron clouds of atoms |
| shooting stars are | small baseball sized rocks that heat up when entering earth atomosphere |
| rotation is | the spinning of the earths axis |
| earths trip around the sun is | revolution |
| a changing magnetic feild produces | electicity |
| electric motors have | magnets |
| 2 magnetism is | electrically charging iron causing the metal to become polarized; any electrical current produces a magnetic field. |
| movement of electrons between energy levels results in | unique absorption and emission of colors of light for each substance |
| spectral analysis | is the study of qunatum levels |
| energy waves | mechanical and electromagnetic |
| mechincal waves are | a physical substance moves thourgh a phyiscal substance, water, heat, sound |
| electromagnetic waves | travel as phtons and include radio, mircowave, visible light |
| 4 basic stable matter | gravity,electromagnetism,strong nuclear force, weak nuclear force |
| a special case of ionic bonding | metallic bonds, the alighment of ions allow electrons to flow freely |
| electrcity | the flow of loose electrons |