Honors Biology Review game Quiz 2 - Atoms, Bonds, Water, & pH

Correctly identify the pair of isotopes.

• Two carbon atoms with a different number of protons

• Two carbon atoms with a different number of neutrons

• Two carbon atoms with a different number of electrons

• Two carbon atoms with a different number of bonds

Ice floats on water because _________.

• water expands as it freezes

• ice is denser than water

• water contracts as it freezes

• ice is heavier than water

When water is attracted to another water molecule its called_______.

• cohesion

• water shrinks when it freezes

• ice has a higher density than water

• adhesion

If two solutions are tested in the lab for pH and one has a pH of 4 while another has a pH of 2, how do the two solutions compare?

• The solution with a pH of 2 is 20X more acidic than the solution with a pH of 4

• The solution with a pH of 2 is twice as acidic as the solution with a pH of 4

• The solution with a pH of 2 is 100X more acidic than the solution with a pH of 4

• There is no difference; they are both acidic

Water molecules are __________.

• polar
• hydrogen bonding
• cohesion

• solvent properties

Select ALL the properties of a base.

• They have a high concentration of OH- ions

• They are slippery

• They taste sour

• They have high pH values

How do true bonds differ from van der Waals forces?

• True bonds are between two atoms but van der Waals forces are between one molecule and one atom.

• True bonds are between one molecule and one atom but van der Waals forces are between two molecules.

• True bonds are between one molecule and one atom but van der Waals forces are between two atoms.

• True bonds are between two atoms but van der Waals forces are between two molecules.

Choose the correct statement.

• The mathematical formula for pH shows that as the H+ ions decreases in concentration, so does the pH value.

• Acids contain a greater number of OH- ions than H+ ions.

• Bases contain a greater number of OH- ions than H+ ions.

• A neutral substance is 100x more acidic than a substance with a pH of 10.

Select all statements that are true about ionic bonds.

• They involve a transfer of one or more electrons.

• They involve the sharing of one or more electrons.

• They can form compounds.

• They are between two molecules.

• They result in ions.

Which of the following is NOT labelled correctly?

• protons - positively charged

• protons - weigh 1 amu

• electrons - negatively charged

• neutrons - negatively charged

• neutrons - weigh 1 amu

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NGSS.MS-PS1-1