AP Unit 1 Review

When salt is dissolved in water, water is the

• solvent

• solute

• solution

• reactant

Tags

NGSS.MS-PS1-2

Capillary action is....

• adhesion

• cohesion

• change in matter (heat of fusion)

• both adhesion and cohesion

Which is NOT a unique property of water?

• Frozen water floats on liquid water.

• Water covers most of the Earth’s surface and retains a large amount of heat.

• Water molecules stick to each other through hydrogen bonds.

• Water cools very rapidly.

Tags

NGSS.MS-ESS2-4

Which question were the scientists trying to answer with this experiment?

• Where do cells come from?

• What came first the chicken or the egg?

• How are biomolecules formed?

• What gave rise to the Eukaryotic cell?

Tags

NGSS.MS-LS1-1

This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted. 

• experimental group

• control group

• data

• variables

Which of the following statements correctly describes any chemical reaction that has reached equilibrium?

• The reaction is now irreversible.

• The rates of the forward and reverse reactions are equal.

• Both forward and reverse reactions have halted.

• The concentrations of products and reactants are equal.

Tags

NGSS.HS-PS1-6

Which of the following best describes the relationship between the atoms described in Figure 2.1?

• They are isotopes.

• They each contain 1 neutron.

• They are compounds.

• They are polymers.

• They contain 1 and 3 protons, respectively.

Tags

NGSS.MS-PS1-1

The reactivity of an atom arises from

• the sum of the potential energies of all the electron shells.

• the potential energy of the valence shell.

• the average distance of the outermost electron shell from the nucleus.

• the existence of unpaired electrons in the valence shell.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Many mammals control their body temperature by sweating. Which property of water is most directly responsible for the ability of sweat to lower body temperature?

• water's change in density when it condenses

• the absorption of heat by the breaking of hydrogen bonds

• the release of heat by the formation of hydrogen bonds

• water's ability to dissolve molecules in the air

We can be sure that a mole of table sugar and a mole of vitamin C are equal in their

• number of molecules.

• number of atoms.

• volume

• mass