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Stack #4725347
| Question | Answer |
|---|---|
| Element | A pure substance that can not be broken down into another substance and is made out of only one atom |
| Compound | A pure substance that consists of two or more elements that are chemically combined |
| Metals | A material that is typically hard, shiny, and is a good conductor of heat and electricity |
| Nonmetals | Are not able to conduct electricity or heat. Right hand side of the periodic table |
| Metalloids | A chemical element with properties in between, or that area of mixture of metals and nonmetals. Staircase in periodic table. |
| Protons | A subatomic particle with a positive charge found in the nucleus |
| Neutrons | A subatomic particle with no charge found in the nucleus |
| Electrons | A subatomic particle with a negative charge found on the outer rings (electron shells) |
| Nucleus | Where protons and neutrons are located |
| Atomic number | An elements place in the periodic table |
| Atomic mass | The weight of an element |
| Periods | Go horizontal on the periodic table and all have the same amount of electron shells |
| Groups | Go vertical on the periodic table and reacts the same way |
| Electron shells | The outer shells of the nucleus and where the electrons are located |
| Conductor | Helps travel things like heat and electricity |
| 7 Noble Gases | Helium, Neon, Argon, Krypton, Xenon, Radon, and Oganesson |
| Mixture | A mixture is a combination of 2 or more different substances which are mixed, but NOT chemically combined |
| Physical Properties | •Color •Odor •Phase •Shape • Heat & electrical conductivity • Boiling, freezing points • Texture • Density |
| Chemical Properties | 1. Flammability: ability to burn •2. Reactivity: ability to combine •3. Rusting: (Iron + water iron oxide) •4. Corrosion: metal chemically reacts with substance |
| Physical change | •Keeps chemical composition and properties •Does not produce a new substance |
| Chemical Change | Chemical reaction •Form new substances with DIFFERENT properties |
| Solutions | “Best mixed” • Small and dissolved particles |
| Solute | substance that does the dissolving |
| Melting | A change in state that occurs when particles speed up and change from a solid to liquid |
| Boiling | A rapid change in state that occurs throughout a substance changing it from a liquid to a gas |
| Freezing | A change in state that occurs when the temperature of particles has decreased energy and a liquid turns into a solid |
| Sublimation | A change in state directly from a solid to a gas |
| Deposition | The change in state directly from a gas to a solid state |
| Evaporation | A change in state that occurs as particles from the surface of a liquid change to a gas |
Created by:
Kayden9