| A | B |
|---|
| mixture | a combination of two or more substances that are NOT chemically combined |
| density | the ratio of the mass of a substance to the volume of the substance |
| Heterogeneous | composed of dissimilar components |
| element | a substance that cannot be separated or broken down into a simpler substance by chemical means |
| chemical change | the change by which one or more substances change to produce one or more new substances |
| pure substance | a sample of matter, either a single element or a single compound, that has definite chemical and physical properties. |
| atom | The smallest unit of an element that maintains the properties of an element that maintains the properties of that element |
| matter | anything that has mass and takes up space |
| homogeneous | same uniform structure or composition throughout |
| molecule | the smallest unit of a substance that keeps all the properties of that substance |
| compounds | substance made up of atoms of two or more different elements that are joined by chemical bonds |
| chemical formula | a combination of chemical symbols and numbers to represent a substance |
