Polarity
What does Polar mean?
What is a covalent bond where electrons are shared unequally.
Which of the following is NOT a result of surface tension in water?
Surface area is spread-out and maximized.
Water has an unusually low vapor pressure.
Surface appears to have a "skin."
Drops tend to become spherical.
Surface area is spread-out and maximized.
What causes water's low vapor pressure?
What is Hydrogen Bonds
Which of the following substances is the most soluble in water?
sodium chloride, bromine, methane, carbon
NaCl
What is the term for the dissolving medium in a solution?
Solvent
What is the chemical formula for water?
What is H20.
What is surface tension?
is the inward force which tends to minimize the surface area of a liquid
What is responsible for holding water molecules together in the liquid state?
Hydrogen Bonds
Which of the following substances is nonpolar and dissolves most readily in gasoline?
CH4 NH3 HCl NaBr
CH4
What type of bond is is NaCl and Why?
Ionic
What type of bond has Polarity?
What is Covalent with pos and neg sides
Why is ice less dense than liquid water?
Ice has a molecular structure that is an open framework held together by hydrogen bonds. Air pockets in expanded crystalized bonds.
How does Suminagashi work?
What is apply ink on water and then lightly apply paper on water.
What type of compound is always an electrolyte?
Ionic
What is in the nucleus of an atom?
Protons and Neutrons
What atoms in the water atom are attracted to each other?
What is 2 hydrogens and one oxygen?
Solvent molecules surround solute ions.
Describe a weak electrolyte
An ionic compound that does not fully dissociate.
Define a solution
Same properties throughout
Which atom in a water molecule has the greatest electronegativity?
What is Oxygen
Which of the following types of mixtures exhibit the Tyndall effect?
suspensions and colloids
What do Hydrogen bonds give water?
What is Surface Tension.
Which is not a colloid?
Orange Juice smoke alloy muddy water
Alloy
Our Ice cream emulsion lab is which type of mixture?
Colloid or Suspension and Why
Colloid