Across
- 5. A chart that organizes all known elements by their properties.
- 7. Characteristics of a substance that help to identify or describe it.
- 8. Row of elements across the periodic table
- 10. Anything that has mass and takes up space.
Down
- 1. Two or more atoms bonded together.
- 2. A pure substance made of only one kind of atom.
- 3. A column of elements in the periodic table
- 4. Negatively charged particles
- 6. The smallest unit of an element that still has the properties of that element.
- 7. Positive charged particles
- 9. Particles that have no charge