Across
- 3. The smallest part of an element that has all the properties of that element.
- 5. A minute, or tiny, portion of matter
- 8. A particle with a positive charge found in the nucleus of atoms.
- 9. Two or more atoms that are attached together.
- 11. A property of particles. Particles with opposite charges attract each other, while particles with the same charges repel.
- 12. A pure substance that can’t be broken down into simpler substances.
- 13. The amount of material contained in an object, such as gold. An object's mass is always the same, even in outer space.
Down
- 1. Any physical substance or material that takes up space and has mass. If you can put it in a jar, it’s matter.
- 2. A particle with no charge found in the nucleus of atoms.
- 4. A substance that consists of two substances mixed together.
- 5. A table that lists the earth’s 118 elements in a specific order.
- 6. The center of the atom, which contains neutrons and protons.
- 7. A negatively charged particle that orbits the center of the atom.
- 10. Atoms from two or more different elements that are attached together in specific proportions.