AP Bio Chem Review

The positive particle in an atom.

• proton

• neutron

• electron

• electron cloud

How many protons does Nitrogen have?

• 7

• 8

• 14

• 14.01

If an element has an atomic number of 11 and a mass number of 23, how many neutrons does it have?

• 11

• 12

• 23

• 34

Which property of carbon is important in the forming of many types of organic compounds

• carbon has 6 electrons

• carbon has 6 protons

• carbon has 4 valence electrons

• carbon can only bond with hydrogen

Because carbon has 4 valence electrons

• it can form up to 4 covalent bonds

• it can form ionic bonds

• it can form only double bonds

• it can form covalent bonds with H only

How many covalent bonds does each carbon have in the molecule shown?

• 4

• 2

• 8

• 6

Water is a polar molecule, which means it has a positive and a negative side. Hydrogen bonds form when:

• _{The positive end of one water molecule bonds to the positive end of another water molecule.}

• _{The negative end of one water molecule bonds to the negative end of another water molecule.}

• _{The positive end of one water molecule bonds to the negative end of another water molecule.}

The ability of water molecules to stick to each other, creating surface tension is called:

• Cohesion

• Adhesion

• Insulation

• Ph

The fact that water can stick to other substances is called:

• Ph

• Adhesion

• Cohesion

• Insulation

Heat Capacity is a measure of the heat required to raise the temperature of 1g of a substance by 1°C.

So...

True or False:

Water has a very high heat capacity, which means it resists changing temperature when heat is added or removed.

• True

• False