Classifying Matter

2. A particle with a positive charge found in the nucleus of atoms.
9. The tiny electrons, and more massive neutrons and protons that make up atoms.
11. A minute, or tiny, portion of matter
13. A table that lists the earth’s 118 elements in a specific order.
14. A pure substance that can’t be broken down into simpler substances.
15. A property of particles. Particles with opposite charges attract each other, while particles with the same charges repel.
17. A mixture, such as lemonade, made of substances that are blended together and will not separate over time.
18. Atoms from two or more different elements that are attached together in specific proportions.

1. Two or more atoms that are attached together.
3. The smallest part of an element that has all the properties of that element.
4. A particle with no charge found in the nucleus of atoms.
5. Any physical substance or material that takes up space and has mass. If you can put it in a jar, it’s matter.
6. The amount of material contained in an object, such as gold. An object's mass is always the same, even in outer space.
7. A mixture, such as cereal and milk, made of substances that are mixed but not dissolved together.
8. The center of the atom, which contains neutrons and protons.
10. A substance that consists of two substances mixed together.
12. Matter that always has the same composition
16. A negatively charged particle that orbits the center of the atom.