Across
- 1. Number of protons in the nucleus
- 3. Explosion that created the universe and its particles
- 5. This disease can be developed when there's not enough iron in the blood
- 6. Represented by H in the periodic table
Down
- 2. Represented by C in the periodic table
- 3. Chemical elements found in living organisms
- 4. Organizes elements based on their atomic number and chemical properties
- 5. Basic particles of chemical elements