| A | B |
|---|
| mass | A measure of the amount of matter in an object. |
| volume | A measure of the size of a body or region in three-dimensional space. |
| density | The ratio of the mass of a substance to the volume of the substance. |
| matter | Anything that has mass and takes up space. |
| chemical change | A change that occurs when one or more substances change into entirely new substances with different properties. |
| physical change | A change of matter from one form to another without a change in chemical properties. |
| physical property | A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness. |
| chemical property | A property of matter that describes a substance’s ability to participate in chemical reactions. |
| solid | The state of matter in which the volume and shape of a substance are fixed. |
| liquid | The state of matter that has a definite volume but not a definite shape. |
| gas | A form of matter that does not have a definite volume or shape. |
| atom | The smallest unit of an element that maintains the properties of that element. |
| compound | A substance made up of atoms of two or more different elements joined by chemical bonds. |
| pure substance | A sample of matter, either a single element or a single compound, that has definite chemical and physical properties. |
| substance | Matter with a definite chemical composition. |
| element | A substance that cannot be separated or broken down into simpler substances by chemical means. |
| periodic table | A table of elements that are arranged according to their properties. |
| viscosity | The resistance of a gas or liquid to flow. |
| molecule | The smallest unit of a substance that keeps all of the physical and chemical properties of that substance. |
| malleable | The ability of a substance to be rolled or pounded into thin sheets. |
