Polar Molecules
positive and negative
Does isopropyl alcohol dissolve salt better or worse than water?
Worse
Is water a polar molecule?
Yes
Which two particles are attracted to each other?
protons and electrons
H2O
Atoms in a polar molecule are unequally sharing what?
electrons
True or False: The more polar the substance, the better it will dissolve.
True
What causes the penny to hold so many drops of water and how can some insects walk on water?
Surface tension
Water molecules are attracted in _______ direction.
Every
Which side of the water molecule is positively charged?
The hydrogen side
Is sucrose (sugar) a polar molecule?
Yes
Why does water dissolve salt?
The positive side of the water molecule is attracted to the negative ions in salt and vice versa, then the salt molecules are broken down piece by piece.
Why are water molecules so attracted to each other?
Will molecules with a neutral charge be attracted to each other or other molecules?
No
Which type of bond are the atoms STEALING electrons?
Ionic
Is isopropyl alcohol more or less polar than water?
Less
Is a sodium chloride molecule (salt) an ionic or covalent bond?
Ionic
Will water dissolve things better or worse than mineral oil?
Better
True or False: Hydrogen bonds are ONLY found in water molecules.
False
What is the chemical name for table salt?
NaCl
What type of bond does a polar molecule have?
covalent bond
Separate from other sugar molecules.
Which atom in the water molecule is pulling the electrons closer to it? (oxygen or hydrogen)
Oxygen
Why does oxygen pull the electrons closer to it in the water molecule?
Because oxygen has more protons than hydrogen which pulls the electrons closer because of the opposite charges.
Would water be a good dissolver of oil? (hint: oil is a NONPOLAR molecule)
No, it would not dissolve oil