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Science EOC List 2
Elements, Compounds, and Mixtures
Term | Definition |
---|---|
acid | substance with a pH lower than 7. |
atom | the smallest particle of an element that still retains the properties of the element. |
base | substance with a pH above 7. |
compound | atoms of more than one type of element that are chemically bonded together. |
element | substance that is made of only one type of atom. |
heterogeneous mixture | a mixture which is not mixed evenly and each component retains its own properties. |
homogeneous mixture | solid, liquid, or gas that contains two or more substances blended evenly throughout. |
mixture | a combination of substances in which the individual substances do not change or combine chemically but instead retain their own individual properties; can be gases, solids, liquids, or any combination of them. |
pH | a measure of the concentration of hydronium ions in a solution using a scale ranging from 0 to 14, with 0 being the most acidic and 14 being the most basic. |
pure substance | substances that are made of only one type of atom or only one type of molecule (a group of atoms bonded together). |
salt | compound formed when negative ions from an acid combine with positive ions from a base. |
solute | in a solution, the substance being dissolved. |
solution | a mixture which is evenly mixed throughout; also known as a homogeneous mixture. |
solvent | in a solution, the substance in which the solute is dissolved. |
suspension | heterogeneous mixture containing a liquid in which visible particles settle throughout. |