BIO DUFFY 2.4-2.6

1) Electronegativity - a measure of an atom’s ability

to pull electrons away from another atom

2) Polar molecule - a molecule with a positive and a negative end

Example: Water

3) Nonpolar molecule - a molecule with no negative or positive end

Example: NaCl - sodium chloride (table salt)

4) what do polar molecules do when placed in water?- They dissolve in water

5) What do non polar molecules do when placed in water? - they do not dissolve in water

Example: oil

6) Intermolecular bond - between 2 molecules ( Hydrogen bonds)

7) Intramolecular bonds - within a molecule ( Holds atoms together to make a molecule) Covalent bonds

8) water== neutral PH, Acid =PH<7 because it releases hydrogens in water

9)ionic bonds- chemical bond where an atom is transferred

10) Polar covalent bond- different electronegatives sharing electrons in a covalent bond