Across
- 2. the elements with the same number of electron shells are grouped in
- 7. Which stage of human reproduction occurs when a sperm cell joins an egg cell?
- 8. what is the name of the bond between two non metals where atoms share electrons
- 11. an organism feeding on decaying organic matter
- 13. name a relationship inwhich one organism hunts another
- 14. What is the SI unit of force?
- 16. What is the stage when a child develops into a sexually mature adult
Down
- 1. Which force opposes motion between two surfaces in contact?
- 3. What is the name of the cell formed after fertilization?
- 4. Name of the subatomic particle that is negatively charged
- 5. relationship between two species where both species benefit
- 6. how many electrons can fit in the second shell
- 9. the atomic number of an element is equal to the number of what
- 10. what is measured in grams per centimetre cubed
- 11. What is the name of a variable that is measured during the experiment
- 12. DNA is found mainly in which part of a cell?
- 15. particle that has no charge