PLEASE DO NOT WRITE ON THE TEST

SPS6a, SPS6b, SPS6c, SPS6d & SPS6e

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

_____ 1. A substance that produces H+ ions in solution is a(n)_____. (SPS6d)

a. acid c. base

b. saltd. soap

_____ 2. The substance being dissolved in a solution is called a (SPS6a)

  1. solutec. ion
  2. electrolyted. solvent

_____ 3. Loose sugar dissolves much faster than a sugar cube because loose sugar has (SPS6b)

a. a greater surface area.c. a higher temperature.

b. less kinetic energy.d. greater surface tension.

_____ 4. You can make a solute dissolve more quickly in a solvent by (SPS6b)

a. adding more solute.c. heating the solvent.

b. adding ice.d. removing some solvent.

_____ 5. An unsaturated solution is one that (SPS6a)

  1. can dissolve more solute at the current conditions.
  2. will precipitate out all its dissolved solute.
  3. can dissolve more solute only if heated.
  4. can dissolve more solute only if the pressure is increased.

_____ 6. When an acid and a base react in a neutralization reaction the products are a salt compound and (SPS6d)

a. table salt.c. a weaker base.

b. a stronger acid.d. water.

_____ 7. A solution that is a weak acid would have a pH of approximately (SPS6d)

a. 2c. 8

b. 6d. 10

_____8.A molecule with a positive and a negative area is ______. (SPS6a)

a. polar c. ionic

b. nonpolard. radioactive

_____ 9. How can you tell that a solution is saturated?(SPS6a)

a. There is no way to tell.

b. You would NOT see solute at the bottom.

c. You would see solute at the bottom.

d. You would see crystals forming on a string.

_____10. Water is an example of a(n)______. (SPS6e)

  1. acidc. neutral substance
  2. based. salt

_____11.A ______substance is one with no separated positive and negative areas. (SPS6b)

  1. polarc. nonpolar
  2. saturatedd. dilute

_____12. A substance that feels slippery is most likely a(n) ______.(SPS6e)

  1. acidc. neutral substance
  2. based. salt

_____13.A solution that contains all of the solute it can normally hold at a given temperatureis ______. (SPS6a)

a. dilute c. supersaturated

b. unsaturatedd. saturated

_____14. A substance that turns blue litmus red is a(n) ______. (SPS6e)

  1. acidc. neutral substance
  2. based. salt

_____15. A(n) ______forms hydroxide ions in water. (SPS6e)

  1. acidc. neutral substance
  2. based. salt

_____16. A substance with a pH of 13 is a(n) ______. (SPS6e)

  1. acidc. neutral substance
  2. based. salt

_____17.In soda pop, the solvent would be the _____. (SPS6a)

a. water c. sugar

b. carbon dioxided. flavoring

_____18. A(n) ______tastes sour. (SPS6e)

  1. acidc. neutral substance
  2. based. salt

_____19.Increasing the surface area of a solid _____. (SPS6a)

a. slows the speed of dissolving

b. has no effect on the speed of dissolving

c. increases the speed of dissolving

d. causes the solid to ionize

_____20.A substance that does not conduct an electric current when it forms a solutionis a(n) _____. (SPS6a)

a. electrolyte c. polar substance

b. nonelectrolyte d. salt

_____21.The terms dilute and concentrated refer to the _____ of a solution. (SPS6a)

a. concentration c. pH

b. strengthd. acidity

Use the following graph to answer questions 22 – 25.

_____22.Which of the salts shown on the graph is the least soluble in water at 10oC? (SPS6c)

  1. KClc. NH4C
  2. KClO3d. The salts are equally soluble

_____23.Which of the salts shown on the graph has the greatest increase in solubility as the temperature increases from 30 degrees to 60 degrees? (SPS6c)

  1. NH4Cc. KClO3
  2. KCld. The salts are equally soluble

_____24.Which two salts have the same degree of solubility at approximately 97oC? (SPS6c)

  1. KClO3and KClc. KCl andNH4C
  2. KClO3and NH4Cd. All three salts are equally soluble

_____25.Which of the following solutions is saturated? (SPS6c)

  1. 30. g of KCl in 100 mL of water at 20oC
  2. 10. g of KClO3in 100 mL of water at 60oC
  3. 70. g of NH4C in 100 mL of water at 80oC
  4. 50. g of KCl in 100 mL of water at 80oC

____26. Magnesium combines with bromine to form ______. (SPS2c)

a. magnesium dibromidec. magnesium bromine

b. magnesium bromided. dimagnesium dibromide

____27. The chemical formula for disulfur hexafluoride is ______.(SPS2c)

a. S2F6c. S6F2

b. S2F7d. S7F2

____28. When magnesium combines with nitrogen the chemical formula is ______. (SPS2b)

a. MgNc. Mg2N3

b. NMgd. Mg3N2

____ 29. In which type of bond do atoms share electrons?(SPS1b)

a. covalent bondsc. ionic bonds b. metallic bonds d. polyatomic bonds

_____ 30. Atoms have no electric charge because they ______. (SPS4b.)

  1. have an equal number of charged and noncharged particles.
  2. have neutrons in their nuclei.
  3. have an equal number of electrons and protons.
  4. Have an equal number of neutrons and protons.

_____31. A group of elements are highly inactive and are used by chemists because of their chemical

stability. In which group are these elements found? (SPS4b.)

a. alkali metalsc. halogens

b. alkaline earth metalsd. noble gases

____ 32. The new isotope formed when carbon – 14 loses a beta particle is ______. (SPS3a.)

14C →0e +AX

6 -1 Z

a.14 Cc.18 O

5 8

  1. 14 N d. 10 Be

74

_____ 33. The number of protons plus the number of neutrons found in an atoms equals its ______. (SPS1a.)

a. mass number.c. number of valence electrons.

b. number of electrons.d. group number.

____ 34. Which symbols represent atoms that are isotopes? (SPS1a.)

  1. C-14 and N-14 c. I-131 and I-131
  2. Rn-222 and Ra-222d. O-16 and O-18

14C6 14N7 + 0e-1

____ 35. This equation represents which type of decay? (SPS3a.)

  1. Alpha particlec. Gamma ray
  2. Beta particled. UV ray

_____ 36. Antoine Lavoisier is credited with the discovery of the law of conservation of mass. This law states that in a chemical reaction, matter is not created or destroyed. Which equation obeys this law? (SPS2d)

a. H2 + Cl2 → 2HCl

b. H2 + Cl2 → HCl

c. H + Cl2 → 2HCl

d. 2H2 + Cl2 → 2HCl2

_____ 37. The following reaction is a ______reaction: MgI2 + Br2 → MgBr2 + I2 (SPS2e)

  1. decompositionc. double replacement
  2. synthesisd. single replacement

_____ 38. A ______does not conduct electricity and heat. (SPS4a.)

a. metalc. metalloids

b. nonmetald. noble gases

_____ 39. Radium has a half-life of 160 years. If you start with a 0.25 g sample, how much will remain after 800 years? (SPS3c.)

a. 0.0078 gc. 0.063 g

b. 0.0156 gd. 0.125 g

______40. Fusion is when nuclei ______, but fission is when they ______. (SPS3b.)

a. split, combine.c. mutate, split.

b. combine, split.d. gain energy, combine.

______41. Starting with 50 grams of Uranium – 238, after one half life has gone by, how many grams of

Uranium – 238 will remain? (SPS3c.)

  1. 12.5 gramsc. 50 grams
  2. 25 gramsd. 100 grams

_____ 42. This group is extremely reactive because of its one valence electron. It even reacts with water. (SPS4a.)

a. nobel gasesc. halogens

b. alkaline earth metalsd. alkali metals

_____43. The kinetic theory states that the particles in matter are always in ______. (SPS5a.)

a. a fixed positionc. motion

b. a fixed shaped. a fixed volume

_____ 44. Choose the coefficients that will correctly balance the following equation: (SPS2e)

___K3P + ___HCl → ___KCl + ___H3P

  1. 2,3,2,2c. 1,3,3,1
  2. 3,2,3,1d. 1,1,1,1

_____ 45. A chemical equation is balanced by changing or adding ______. (SPS2e)

a. chemical symbols.c. coefficients.

b. subscripts.d. reactants.