Remember “like dissolves like”
Glencoe Physical Science: Chapter 22
_____ 252. When an aqueous solution of sodium chloride is made, the ___ is sodium chloride.
A) solute B) solvent C) concentration D) product
_____ 253. A crystal of solute was dropped into a solution and the whole solution
crystallized. The original solution was
A) saturated B) unsaturated C) supersaturated
_____ 254. Stirring _____ the rate of dissolving of a solid in a liquid.
A) increases B) decreases C) has no effect on
_____ 255. Decreasing temperature ___ the rate of dissolving a gas in a liquid.
A) increases B) decreases C) has no effect on
_____ 256. Adding more solute to a solvent ___.
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increases its freezing point
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does not affect its boiling point
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decreases its boiling point
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decreases its freezing point
_____ 257. The maximum number of grams of solute that will dissolve in 100 g of
solvent at a certain temperature is the ____ of the solute.
A) solubility B) dilution C) electrolyte D) saturated
_____ 258. Any solution that can hold more solute at a given temperature is ____.
A) saturated B) unsaturated C) supersaturated
_____ 259. A solution that has 4 g of KCl dissolved in 100 mL of water is ___ compared
to a solution that has 30 g of KCl dissolved in 100 mL of water.
A) dilute B) concentrated C) saturated
_____ 260. Which of the following is LEAST related to the others?
A) stir B) grind C) heat D) hydrate
_____ 261. Increasing the surface area of a solid ____.
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causes the solid to ionize
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has no effect on the rate of solution
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slows the rate of solution
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speeds the rate of solution
_____ 262. A solution that contains all the solute it can hold at a given temperature is _
A) diluted B) saturated C) supersaturated D) unsaturated
_____ 263. A substance that does NOT conduct electricity when it forms a solution is
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an electrolyte
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a nonelectrolyte
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a nonpolar substance
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a polar substance
_____ 264. In a salt water solution, the salt is the
A) solute B) solvent C) dilution D) liquid
_____ 265. Organic solvents are substances that ____.
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are usually odorless
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cannot be absorbed through the skin
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do not vaporize
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are found in paints
_____ 266. A crystal of solute was dropped into a solution and it dissolved. The original solution was
A) saturated B) unsaturated C) supersaturated
_____ 267. A polar substance will most likely dissolve in
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a polar solvent
-
a nonpolar solvent
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either a polar or nonpolar solvent depending on the temperature
6.05—Assess the indicators of chemical change including:
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development of a gas
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formation of a precipitate
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change in color
Glencoe Physical Science: Chapters 15 & 21
_____ 268. The formation of a precipitate when two solutions are mixed is an example of
-
a chemical change
-
a physical change
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a chemical property
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a physical property
_____ 269. What is an insoluble solid that forms as the result of a chemical reaction?
A) a precipitate B) an inhibitor C) an aqueous D) a catalyst
_____ 270. A gas is produced when which of the following are combined?
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AgNO3 and HCl
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NaHCO3 and NaOH
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Zinc and HCl
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Zinc and CuSO4
_____ 271. Three indications that a chemical reaction has occurred are
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a color change, the production of a gas, the particles of the substances
are smaller
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a solid melts to a liquid, the particles of a substance become smaller,
and an odor is noted
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a color change, the production of a gas and the production of an
insoluble solid
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a precipitate forms, sublimation occurs and the particles dissolve
_____ 272. In all chemical reactions, energy is
-
released
-
absorbed
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either released or absorbed depending on the reaction
_____ 273. A substance that speeds up a chemical reaction but does not get changed by the reaction is a/an
A) inhibitor B) catalyst C) preservative
_____ 274. Substances that speed up chemical reactions in living things and make life reactions take place
at faster speeds and lower temperatures are called
A) inhibitors B) enzymes C) preservatives
_____ 275. Substances that prevent a chemical reaction from occurring are called
A) inhibitors B) enzymes C) catalysts
6.06—Compare and contrast the composition of strong and weak solutions of
acids or bases:
-
Degree of dissociation or ionization
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Electrical conductivity
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pH
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Strength
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Concentration
Glencoe Physical Science: Chapters 22 & 23
_____276. If a substance produces ___ ions when it is dissolved in water, it is an acid.
A) oxygen B) hydrogen C) nitrogen
_____ 277. When an acid is dissolved in water, one of the particles that is produced is
A) H+ B) O 2- C) OH- D) N 3-
_____ 278. Which of the following is an acid?
A) CaCO3 B) H2SO4 C) HCN
D) all of the above E) only B and C
______ 279. Which kind of acid is found in your car batteries?
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phosphoric acid
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hydrochloric acid
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sulfuric acid
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nitric acid
_____ 280. Which kind of acid is naturally found in your stomach?
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phosphoric acid
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hydrochloric acid
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sulfuric acid
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nitric acid
_____ 281. The hydronium ion has the formula ___.
A) OH- B) H3O+ C) HOH+
_____ 282. Hydronium ions are formed when ___ are dissolved in water.
A) acids B) bases C) alcohols
_____ 283. Hydroxide ions are formed when ___ are dissolved in water.
A) acids B) bases C) alcohols
_____ 284. Organic acids contain the group ___.
A) -OH B) –COOH C) H3O+
_____ 285. A substance has a slippery feel and conducts electricity. The substance is probably
A) an acid B) a base C) a salt D) aqueous
_____ 286. The reaction of an acid and a base is called
A) titration B) neutralization C) saponification D) pickling
_____ 287. The reaction of an acid and a base always produces
A) sodium chloride B) water C) soap
_____ 288. A base that only partly dissociates in an aqueous solution would be described as
A) dilute B) weak C) strong D) concentrated
_____ 289. What is the difference between a strong acid and a weak acid?
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a strong acid eats through metal and a weak acid does not
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a strong acid completely turns to ions in a water solution and a weak acid only partially turns to ions in a water solution
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a strong acid is more concentrated than a weak acid
_____ 290. What is the difference between a strong base and a weak base?
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a strong base dissolves proteins and a weak acid does not
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a strong base completely turns to ions in a water solution and a weak base only partially turns to ions in a water solution
-
a strong base is more concentrated than a weak base
_____ 291. The pH of a solution measures the
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strength of an acid or a base
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the concentration of hydroxide ions in a solution of an acid or a base
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the concentration of hydronium ions in a solution of an acid or a base
_____ 292. A solution with a pH of 7 is ___.
A) acidic B) basic C) neutral
_____ 293. A solution with a pH of 9 is ___.
A) acidic B) basic C) neutral
_____ 294. A solution with a pH of 5 is ___.
A) acidic B) basic C) neutral
_____ 295. A solution with a pH of 3 will turn litmus paper __.
A) red B) blue C) white
_____ 296. A solution with a pH of 11 will turn litmus paper ___.
A) red B) blue C) white
_____ 297. When an acid is reacted with a base, the products are
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water and a salt
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water and titration
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a detergent and water
_____ 298. The process of determining the concentration of one solution by reacting it
with another solution of known concentration is called
A) saponification B) neutralization C) titration
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