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Chemistry; Ch.1 & 2
Crystal Cathedral High School Sophomores (Semester 1; Ms. Rose)
| Question | Answer |
|---|---|
| Alloy | A solid solution containing different metals, and sometimes nonmetallic substances. |
| Aqueous Solution | A solution in which the solvent is water. |
| Density | The amount of matter (mass) in a given unit volume. |
| Endothermic | Chemical reaction that absorbs heat energy. |
| Exothermic | Chemical Reaction that gives off heat energy. |
| Law of Conservation of Mass | In a chemical change, matter is neither created nor destroyed. |
| Mass | The measure of the amount of matter an object contains. |
| Matter | Anything that takes up space and has mass. |
| Compound | A chemical combination of two or more different elements joined together in a fixed proportion. |
| Mixture | A combination of two or more substances in which the basic identity of each substance is not changed. |
| Physical Change | A change in matter where its identity does not change. |
| Chemical Change | The change of one or more substances into other substances. |
| Qualitative | An observation made without measurement. |
| Solute | The substance that is being dissolved when making a solution. |
| Solvent | The substance that dissolves the solute when making a solution. |
| Solution | A mixture that is the same throughout, or homogeneous. |
| Neutron | A subatomic particle with a mass equal to a proton but with no electrical change. |
| Proton | A positively charged subatomic particle. |
| Electron | Negatively-charged particle. |
| Nucleus | The small dense, positively charged central core of an atom. |
| Theory | An explanation based on many observations and supported by the results of many experiments. |
| Law of Conservation of Energy | Statement that energy is neither created nor destroyed in a chemical change, but is simple changed from one form to another. |
| Law of Conservation of Mass | In a chemical change, matter is neither created nor destroyed. |
| Atomic Number | The number of protons in the nucleus of an atom of an element. |
| Atomic Mass | The amount an atom weighs. |
| Electromagnetic Spectrum | The whole range of electromagnetic radiation. |
| Electron Cloud | The space around the nucleus of an atom where the atom's electrons are found. |
| Periodic Table | Created by Dimitri Mendelev. An organized table with the elements of the earth. |
| Valence Electrons | An electron in the outermost energy level of an atom. |
| Li (Alkali) | Lithium |
| Na (Alkali) | Sodium |
| K (Alkali) | Potassium |
| Rb (Alkali) | Rubidium |
| Cs (Alkali) | Cesium |
| Fr (Alkali) | Francium |
| Be (Alkaline) | Beryllium |
| Mg (Alkaline) | Magnesium |
| Ca (Alkaline) | Calcium |
| Sr (Alkaline) | Strontium |
| Ba (Alkaline) | Barium |
| Ra (Alkaline) | Radium |
| H (Nonmetal) | Hydrogen |
| He (Nonmetal) | Helium |
| B (Nonmetal) | Boron |
| C (Nonmetal) | Carbon |
| O (Nonmetal) | Oxygen |
| F (Nonmetal) | Flourine |
| Si (Nonmetal) | Silicon |
| P (Nonmetal) | Phosphorus |
| S (Nonmetal) | Sulfur |
| Cl (Nonmetal) | Chlorine |
| As (Nonmetal) | Arsenic |
| Se (Nonmetal) | Selenium |
| Br (Nonmetal) | Bromine |
| Te (Nonmetal) | Tellurium |
| I (Nonmetal) | Iodine |
| At (Nonmetal) | Astatine |
| Ne (Nonmetal) | Neon |
| Ar (Nonmetal) | Argon |
| Kr (Nonmetal) | Krypton |
| Xe (Nonmetal) | Xenon |
| Rn (Nonmetal) | Radon |
| Ti (Inner/Trasition Metal) | Titanium |
| Fe (Inner/Trasition Metal) | Iron |
| Ag (Inner/Trasition Metal) | Silver |
| Pt (Inner/Trasition Metal) | Platinum |
| Al (Inner/Trasition Metal) | Aluminum |
| Cr (Inner/Trasition Metal) | Chromium |
| Ni (Inner/Trasition Metal) | Nickel |
| Au (Inner/Trasition Metal) | Gold |
| Hg (Inner/Trasition Metal) | Mercury |
| Ge (Inner/Trasition Metal) | Germanium |
| Nm (Inner/Trasition Metal) | Manganese |
| Cu (Inner/Trasition Metal) | Copper |
| W (Inner/Trasition Metal) | Tungsten |
| U (Inner/Trasition Metal) | Uranium |
| Rutherford's Experiment | Consisted of a lead-shielded box containing radioactive polonium, which emitted positively charged particles through a small hole. |
| Democritus | Proposed that the world is made up of empty space and atoms. |
| Dalton | Made the atomic theory. |
| The Chocolate Chip Cookie Theory | Made by Thomson. |
| The Planetary Revolution Theory | Made by Niels Bohr. |
| The Electron Cloud Theory | Made by Modern Scientists. |
Created by:
dez(a)rey
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