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Physical Science ch9
Matter comparing
| Question | Answer |
|---|---|
| atom | the smallest unit of an element that retains the properties of the element |
| density | the amount of mass for each milliliter of a substance |
| molecule | consists of two or more atoms joined together as a single particle |
| element | a material that cannot be broken down into anything simpler by using a chemical reaction |
| ductility | the ability to make a material thin without breaking it |
| nucleus | the hard core of an atom |
| matter | anything that has mass and volume |
| volume | measure of how much space an object takes up |
| metals | groups of elements that have conductivity, luster, and flexibility as properties |
| malleability | bending a material without breaking |
| milliliter | unit used to measure volume |
| pound | unit used to measure weight |
| inch | unit used to measure distance |
| proton | 1. has a positive charge 2. located inside the nucleus 3. determines which element it is |
| neutron | 1. has no electrical charge 2. located inside the nucleus |
| electron | 1. has a negative charge 2. located inside an atom BUT outside the nucleus |
| Uses for the element aluminum | 1. mirrors -- because it can be polished to be reflective 2. to cover food -- it reflects heat 3. electrical wiring -- it conducts electricity and is inexpensive 4. cans -- easy to mold into a shape and inexpensive |
| What is the equation for calculating DENSITY? | Density = Mass(divided by)volume |
Created by:
Team 5
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