9 GRADE CHAPTER 2

COPY AND COMPLETE THE INFORMATION IN YOUR NOTEBOOK
 1. Differ between the subatomic particles
 2. Differ between Ion and isotopes
3. Differ between ionic and covalent bonds
 4. Explain the properties of water: cohesion, polarity, adhesion and heat capacity
 5. difer between solution and suspensions
6. Solution parts: solute and solvent

 Compounds are form by combination of elements, the compound have properties different from the elements that form it.
 The pH scale is used to indicate the concentration of H ions in solutions; solutions with a pH lower Than 7 is an acid but solutions with pH higher than 7 is called base.
Parts of an Amino acid are: Amino group (NH2, Carboxyl group (-COOH), Hydrogen and a Functional group.
Parts of a nucleotide: a 5 carbon compound, a phosphate group (PO4) and a nitrogenous base(Adenine, guanine, thymine and cytocine, uracil)

Carbon compound	Monomer	Polymer	Elements	Function
Carbohydrates	Monosaccharides(glucosa)	Disacccharide(sucrose) Polysaccharides (starch)	CxH2xOx	Main source of energy in living things
Protein	Amino acid	Protein	C,H,O,N	Buid and repair tissues
Lipids	Fatty acid and glycerol	Phospholipid, wax	C, H and O Long chain of C and H	Store energy
Nucleic acid	Nucleotides	DNA and RNA	C,H,O,N,P	Store and transmit heredity or genetic information