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Ross Unit 3 Vocab
Unit 3 Vocabulary
| Term | Definition |
|---|---|
| Weight | The measure of the gravitational force on an object. |
| Element | This is made up of one or more of the same kind of atom chemically combined. |
| Mixture | Contains a variety of elements and compounds that are not chemically combines with each other. |
| Compound | Made up of different kinds of atoms chemically combined. |
| Electron | A subatomic particle that has a negative charge. (-) |
| Chemical Symbol | A one, two, or three letter abbreviation of the name of an element. Examples Ca, O, and N. |
| Proton | Subatomic particle that has a positive charge and is located in the nucleus of the atom. (+) |
| Neutron | A subatomic particle that has no charge. |
| Atomic Number | The number of protons in the nucleus of an atom. This is the same number for all atoms of an element. |
| Pure Substance | A sample of matter, either a single element of a single compound, that has a definite chemical and physical properties. |
| Atom | The smallest unit of an element that maintains the properties of that element. The building block of matter |
| Density | The ratio of the mass of a substance to the volume of a substance. D=M/V |
| Mass | It describes the amount of matter in an object. |
| Matter | Anything that has mass and takes up space. |
| Physical Property | A characteristic of a substance that can be observed or measured without changing the identity of the substance. Types are density, conductivity, solubility, malleability, magnetic, melting points, hardness. |
| Volume | The amount of space that an object takes up, or occupies. V=M/D or V=lwh |
| Chemical Property | A characteristic that describes a substance's ability to change into a new substance with different properties. Types include flammability, reactivity with other substances, ability to ruse. |
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