Vocab words

4. sample of matter, either a single element or a single compound, that has definite chemical and physical properties
5. state: The change of a substance from one physical state to another
9. The state of matter that has a definite volume but not a definite shape
10. Anything that has mass and takes up space
13. A group of atoms that are held together by chemical forces; a molecule is the smallest unit of a compound that keeps all the properties of that compound
14. A substance made up of atoms of two or more different elements joined by chemical bonds
15. The amount of force exerted per unit area of a surface
16. A measure of the amount of matter in an object
18. An attraction between atoms or ions that holds them together, forming molecules and compounds, driven by atoms seeking a more stable, lower-energy state

1. The measure of how much mass is packed into a specific volume
2. A tabular display of all 118 known chemical elements
3. A measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object
6. The state of matter in which the volume and shape of a substance are fixed
7. The total kinetic energy of a substance's particles
8. A substance that cannot be separated or broken down into simpler substances by chemical means
11. A form of matter that does not have a definite volume or shape
12. The amount of space that an object takes up, or occupies
17. The smallest unit of an element that maintains the properties of that element