Across
- 2. The chemical symbols for the ______ elements are BrINClHOF twins.
- 3. This natural process creates a "heat blanket" around the planet
- 5. ______ currents; flow of fluids, hot fluids rise and colder fluids sink
- 7. Soil that is permanently frozen
- 9. Found in both plant and animal cells, the power plant of the cell.
- 10. _______ ion, an ion with more than one element
- 13. Chemical symbol H2S
- 15. Proxy records are an indirect record of past temperatures.
Down
- 1. states that the mass of reactants is always equal to the total mass of products
- 4. Products of a ________ reaction are carbon dioxide and water.
- 6. The stage of the cell cycle in which the nucleus is divided
- 8. measure of how acidic or basic something is
- 11. disease when cells divide uncontrollably
- 12. Chemical symbol Al
- 14. Found in only plant cells, provides support, strength, and protection