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science
science final
| Question | Answer |
|---|---|
| Matter | anything that has mass and takes up space. |
| Chemistry | Study of the properties of Matter and how Matter changes. |
| Chemical property | Is a characteristic of a pure substance that describes its ability to change into another substances. |
| Physical property | A characteristic of a pure substance that can be observed without changing it into another substance. |
| Element | A pure substance that cannot be broken down into other substances by chemical or physical means. |
| Atom | A basic particle from which all elements are made. |
| Molecule | A particle made of two or more atoms bonded together. |
| Compound | A pure substance of two or more elements chemically combined. |
| Chemical formula | A formula that gives the elements in a compound and the ratio of atoms. |
| Mixture | Two or more substances that are mixed together but not chemically combined. |
| Solution | Is an example of a homogeneous mixture: forms when substances dissolve. |
| Weight | A measure of the force of gravity on an object. |
| Mass | A measure of how much matter is in an object. |
| Volume | The amount of space matter occupies. |
| Density | The measurement of how much mass of a substance is contained in a given volume. density = mass over volume. |
| Energy | Is the ability to do work or cause change. every chemical or physical change in matter includes a change in energy. |
| Nucleus | Control center, directing all of the cells activity. |
| Liquid | A state of matter that has no definite shape but has a definite volume |
Created by:
hobbes765
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