| A | B |
|---|
| element | A pure substance that cannot be broken down further by ordinary chemical means. |
| compound | Two or more elements chemically combined. |
| mixture | Two or more elements or compounds that are blended without combining chemically. |
| heterogeneous mixture | The substances in this kind of a mixture are not spread out or completely blended. |
| homogeneous mixture | The substances is this type of mixture are spread evenly throughout or dissolved completely. |
| solution | A homogeneous mixture in which one substance, the solute, is dissolved in another substance, the solvent. |
| suspension | A heterogeneous mixture in which the particles are large enough to be seen by the unaided eye and eventually settle out of the mixture. |
| colloid | a mixture in which the size of the particles are between that of a solution and a suspension; particles appear evenly distributed. |
| emulsions | A mixture of two liquids that do not mix. |
| physical change | Any change in size, shape, or form where the characteristics of the matter stay the same. |
| chemical change | The characteristics of the matter change. |
| chemical compound | A chemical combination of two or more substances |
| chemical bonds | Electrically charged particles that bond with other particles (atoms). |
| protons | Found in the nucleus; these particles have a positive charge. |
| electrons | Very small particles that move around the nucleus that have a negative charge. |
| atoms | The smallest particles of an element that have the same chemical properties as the element. |
| nucleus | A tiny body in the center of an atoM (the control center of the cell). |
| atomic number | The number of protons in an element. |
| metals | Any group of elements that conduct heat and electricity. |
| metalloids | Any of the elements that have properties of both metals and non-metals. |
| non-metals | Any of the elements with properties that are the opposite of metals; poor conductors of heat and electricity. |
