Mod. 4 Flashcards
(12 cards)
Chem. formula
notation showing elements in compound and the ratios of the atom of the element.
Reactants
substances that undergo chem. change
products
the new subs formed through chem. change
coefficients
numbers that appear before a formula in chem. equation
ionic compound
compound formed because of the attraction between positive and negatively charged atoms.
covalent bonds
sharing electrons between 2+ atoms
ionic bonds
giving/taking electrons from other atoms
polar molecule
molecule that has slight negative or positive charge
electronegativity
a way of measuring how grabby an atom is for electrons
hydrophobic
non polar molecule “afraid” of water
What are water’s benefits?
water’s polarity helps it dissolve other subs.
water is a universal solvent
water has hydrogen bonding which helps it: stay liquid. move up the stem of a plant. have surface tension.
