Across
- 4. The tiny basic building block of all matter that retains chemical properties.
- 5. A neutral particle found in the nucleus with no electric charge.
- 7. Anything that has mass and takes up space by having volume.
- 9. Atoms of the same element that have different numbers of neutrons.
- 10. A physical combination of substances that looks completely uniform throughout, like salt dissolved in water.
Down
- 1. Physical combination of two or more substances that are not chemically bonded together.
- 2. A pure substance made of only one specific type of atom.
- 3. A substance created when two or more different elements are chemically bonded.
- 5. The dense, central region of an atom containing protons and neutrons.
- 6. This property determines whether a particle attracts or repels other charged particles.
- 8. A heavy, positively charged particle located inside the center of an atom.