Chemistry Revision

5. Anything that takes up space and can be weighed
6. A negatively charged particle found in the nucleus of an atom.
9. A substance that cannot be broken down into another substance and is made of only one type of atom.
10. A positively charged particle found in the nucleus of an atom.
11. A combination of two or more substances

1. The measurement of how tightly a material is packed together.
2. A small particle with a negative charge that is found in an atom.
3. A group of one or more atoms connected by chemical bonds.
4. A substance made from two or more different elements that are chemically joined.
7. A small particle made up of matter, that defines a chemical element.
8. A mixture of two or more elements.