science vocab

3. the state of matter that has a definite volume but not a definite shape
6. a strong attraction between atoms or ions, formed when they share, lose, or gain valence electrons to achieve a stable, full outer electron shell
8. a substance made up of atoms of two or more different elements joined by chemical bonds
9. the ratio of an object's mass to its volume
10. the total kinetic energy of a substance's particles
11. anything that has mass and takes up space
13. the smallest unit of an element that maintains the properties of that element
16. a measure of the amount of matter in an objec
17. the state of matter in which the volume and shape of a substance are fixed
18. a form of matter that does not have a definite volume or shape

1. a measure of how hot (or cold) something is; specifically, a measure of the average kinetic energy of the particles in an object
2. a sample of matter, either a single element or a single compound, that has definite chemical and physical properties
4. a chart that organizes all known chemical elements by increasing atomic number
5. the amount of force exerted per unit area of a surface
7. the change of a substance from one physical state to another
12. a substance that cannot be separated or broken down into simpler substances by chemical means
14. 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
15. the amount of space that an object takes up, or occupies