1. synthesis of repeating molecules
carbohydrate
2. decomposition using water
polymerization
3. two or more simpler molecules strung together
lipid
4. a group of organic compounds including fats and steroids
polymer
5. a sugar or polymer of sugar
hydrolysis
6. a sequence of sugars, phosphates, and nitrogenous organic bases
nucleic acid
7. large number of amino acids linked together by peptide bonds
protein

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."