Across
- 3. Electron in the outermost shell of an atom
- 8. Made by joining of hundreds or thousands of smaller molecules
- 10. Interaction between two non-polar polypeptides
- 13. The polymer of amino acids
- 15. It represents the ability of an atom to attract the shared electrons
- 19. The smallest unit that keeps the chemical properties of an element
- 20. The group of atoms in a compound
- 21. A chemical reaction which a compound reacts with water to produce other compounds
Down
- 1. Positively charged particle
- 2. A chemical reaction which involves the loss of water and join two compounds in association
- 4. The chemical substance that helps speed up chemical reactions and makes them happen easily in the plant or animal
- 5. A substance that is consist of oxygen, hydrogen, and carbon. It provides heat and energy to our bodies
- 6. The form of themolecular structure of DNA
- 7. An attraction between two atoms (Based on redistribution of outer electron)
- 9. Have same number of protons but different number of neutrons
- 11. Compounds that contains carbon
- 12. A particle in atomic nucleus that have no charge
- 14. Formed when two atoms share electrons
- 16. Very branched polymer of glucose
- 17. A type of lipid that is consist of 1 glycerol and 3 fatty acids
- 18. A type of protein that is used to defend and against bacteria
