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Matter vocabulary
Term | Definition |
---|---|
Element | A pure substance where all the atoms are the same. |
Subatomic particle | Particles that are smaller than an atom and make up an . |
Proton | Subatomic particle with a positive charge. |
Neutron | Subatomic particle with a neutral charge. |
Electron | Subatomic particle with a negative charge |
Matter | Anything that has mass and volume |
Atom | The smallest unit of matter |
Atomic number | The number of protons in the nucleus of an atom. |
Atomic mass | The number of protons AND neutrons in the nucleus of an atom |
Mixture | two or more peaces of matter that can be mixed together and separated |
Solution | Two or more peaces of matter that can be mixed together but not easily separated. |
Compound | made up of two or more different kinds of atoms. |
physical change | No new substance is created |
chemical change | A new substance is created |
Water displacement method | The method used to measure the volume of an irregular shaped object. |
mass | the amount of matter in an object |
volume | the amount of space an object takes up |