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PS Chapter 7
Foundations of Chemistry
Term | Definition |
---|---|
Matter | Anything that has mass and takes up space |
Atom | A small particle that is a building block of matter |
Substance | Matter with a composition that is always the same |
Element | A substance that consist of just one type of atom |
Compound | A type of substance containing items of two or more different elements chemically bonded together |
Mixture | Matter that can vary in composition |
Heterogenous mixture | A type of mixture in which the individual substances are not evenly mixed |
Homogenous mixture | A type of mixture in which the individual substances are evenly mixed |
Dissolve | To form a solution by mixing evenly |
Physical property | A characteristic of matter, that you can observed, or measured without changing the identity of the matter |
Mass | The amount of matter in an object |
Density | The mass per unit volume of a substance |
Solubility | The ability of one substance to dissolve in another |
Physical change | A change in size, shape, form, or state of matter, in which the matters identity stays the same |
Chemical property | A characteristic of matter that can be observed as it changes to a different type of matter |
Chemical change | A change in matter in which the substances that make up the matter change into other substances, with new physical and chemical properties |
Concentration | The amount of substance in a certain volume |