Water & carbohydrates & lipids

1. What makes water a polar molecule?

2. What weak bond forms between neighbouring water molecules?

3. Name the attraction of water molecules to one another.

4. Name the attraction of water to other surfaces.

5. What property lets small insects walk on water?

6. Does ice float or sink in water?

7. Why is ice less dense than liquid water?

8. What is often called the 'universal solvent'?

9. What does water's high specific heat allow it to do?

10. How many covalent bonds does carbon form?

11. Carbon-based molecules are called ___ molecules.

12. What is a monomer?

13. What is a polymer?

14. Name the reaction that joins monomers and removes water.

15. Name the reaction that splits polymers by adding water.

16. Which three elements make up carbohydrates?

17. Give the chemical formula of glucose.

18. What is a single sugar unit called?

19. Which sugar does the blood carry as fuel?

20. Two monosaccharides joined form a ___.

21. Name the disaccharide known as table sugar.

22. Name the storage polysaccharide in plants.

23. Name the storage polysaccharide in animals.

24. Name the structural polysaccharide in plant cell walls.

25. Why is cellulose called dietary fibre for humans?

26. Do lipids mix with water?

27. A triglyceride is made of glycerol and three ___.

28. What is a fat with only single bonds in its tails called?

29. What is a fat with double-bond kinks, liquid at room temperature, called?

30. Which lipid forms cell membranes?

31. What arrangement do phospholipids form in water?

32. Name a steroid found in animal cell membranes.

33. Which stores more energy per gram, fat or carbohydrate?