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8th Unit 7a
Nature of Matter Key Terms part 1
| Term | Definition |
|---|---|
| Electron Cloud | The part of an Electron that contains all of the orbiting electrons |
| Element | The Simplest type of substance made up of only one type of atom |
| Orbit | To revolve around something, such as electrons revolving around the nucleus |
| Matter | Anything that has mass and takes up space |
| Neutral | Neither positive nor negative |
| Nucleus | The central part of an atom that contains the protons and neutrons |
| Bond | Something that binds or joins two things together |
| Compound | A Substance made up of two or more different types of atoms |
| Model | A structure built to represent something else for the purpose of study |
| Product | A chemical substance formed as a result of a chemical reaction |
| Reactant | An original substance involved in a Chemical reaction |
| Mixture | A physical combination of two or more subatances |
| Pure Substance | A substance made up of all the same type of atom or all the same type of molicule |
| Molecule | Two or more atoms bonded together |
| Property | A characteristic of something |
| Chemical Property | A property that describes the potential to undergo some kind of chemical change |
| Physical Property | A property that can be observed without chemically altering a substance |
| Acid | A substance with a pH lower than 7 |
| Bace | A substance with a pH higher than 7 |
| Magnetic | A force field capable of attracting iron and steel objects |
| Physical Change | A change that does not involve the breaking nor the forming of chemical bonds. |
| Chemical Change | A change that occurs when chemical bonds are formed or broken to create new substances. |
| Chemical Bond | An attractive force linking atoms |
| Substance | Matter; a physical material |
| Dissolve | To mix with a liquid and pass into solution |
| Evaporate | To convert or change from a liquid to a vapor (gas) |
| Periodic Table | An arrangement of elements according to their atomic numbers |
| Atomic Number | The number of protons in an atom |
| Chemical Symbol | The short abbreviation for the name of a chemical element |
| Atomic Mass | The number of protons plus the number of neutrons in an atom |
| Horizontal | Flat or level; parallel to the ground |
| Vertical | Upright; perpendicular to the horizon |
| Group | Vertical column in the periodic table |
| Period | Horizontal row in the periodic table |
| Metal | An element that is ductile, malleable, and conducts heat and electricity. |
| Nonmetal | An element that is not a conductor of heat or electricity lacks al |
| Metalloid | An element having some, but not all, the properties of a metal |
| Malleable | Can be hammered or pressed into thin sheets without breaking |
| Ductile | Can easily be drawn into wire |
| Conductor | A material or an object that can |
| Density | The amount of matter per unit volume; m/V where m=mass and V=Volume |
Created by:
darrin_evans
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