BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 2, Problem 10SA
A salt does not release ______ in water.
| a. ions | b.
|
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Acids are substances that ________.
a.
release hydrogen ions
b.
absorb hydrogen ions
c.
absorb hydroxide ions
In the picture below, both persons carry the same mass of rock salt to be dissolved in the same volume of water. Which of the following statements below is true?
a. The rock salt of person A will dissolve slower because of the larger surface area.
b. The rock salt of person B will dissolve faster because of the smaller surface area.
c. The rock salt of person B will dissolve faster though the surface area of the salt is the same with that of person A.
d. The rock salt of person A will dissolve slower because it does not have a larger surface area than in B.
Which of the following describes a buffer?
A. The measure of the amount of hydrogen ions in a liquid
B. A set of chemicals that can keep the pH of a solution stable by alternately donating and accepting the ions that contribute to pH
C. A substance that releases hydrogen ions in water
D. A substance that accepts hydrogen ions in water
Chapter 2 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 2 - What atom has only one proton? a. hydrogen c. a...Ch. 2 - A molecule into which a radioisotope has been...Ch. 2 - Prob. 3SACh. 2 - Prob. 4SACh. 2 - All ions have at least one ________ select all...Ch. 2 - Rank the following chemical bonds in order of...Ch. 2 - The mutual attraction of opposite charges holds...Ch. 2 - Atoms share electrons unequally in an _______...Ch. 2 - An _________ substance repels water. a. acidic c....Ch. 2 - A salt does not release ______ in water. a. ions...
Ch. 2 - Hydrogen ions H+ are _____. a. in blood c....Ch. 2 - When dissolved in water, an _________ donates H+;...Ch. 2 - An ________ can help keep the pH of a solution...Ch. 2 - Prob. 14SACh. 2 - Prob. 15SACh. 2 - Alchemists were the forerunners of modern-day...Ch. 2 - Draw a shell model of a lithium atom Li, which has...Ch. 2 - Polonium is a rare element with 33 radioisotopes....Ch. 2 - Some undiluted acids are not as corrosive as when...
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- A salt does not release __________ in water. a. ions b. energy c. H+arrow_forwardThe pH of lemon juice is about 2.0, whereas tomato juice’s pH is about 4.0. Approximately how much of an increase in hydrogen ion concentration is there between tomato juice and lemon juice? a. 2 times b. 10 times c. 100 times d. 1000 timesarrow_forwardWhich of the following statements is not true? a. Water is polar. b. Water stabilizes temperature. c. Water is essential for life. d. Water is the most abundant atom in Earth’s atmosphere.arrow_forward
- Manufacturers make carbonated drinks by forcing pressurized carbon dioxide gas into flavored water. A chemical reaction between water molecules and some of the CO2 molecules creates hydrogen ions (H+) and bicarbonate, which is a buffer. In your opinion, is this reaction likely to raise the pH of a soda above 7, or lower it? Give your reasoning.arrow_forwardAs water is chilled, its molecules slow their movement, and H-bonds form and hold water molecules further apart. This explains why.... a. Water is most dense just above freezing b. Ice floats c. Water molecules dissociate only a small amount d. Why living near a lake moderates temperatures on landarrow_forwardwhich of the following is a characteristic of a buffer? a. The pH will go down significantly when H3O+ is added to the buffer b. The pH will go down very slightly when H3O+ is added to the buffer c. The pH will go up significantly when H3O+ is added to the bufferarrow_forward
- Mobile phase can be : A) Solid or liquid B) Only solid C) Only gas D) Liquid or gasarrow_forwardWhich of the following statements is not true? a. Water is polar. b. Water stabilizes temperature. c. Water is essential for life. d. Water is the most abundant molecule in the Earth’s atmosphere.arrow_forwardHydrogen ions (H+) are ________ .a. in blood c. indicated by a pH scaleb. protons d. all of the abovearrow_forward
- A pH of 3 is a. basic b. neutral c. acidicd. a bufferarrow_forwardA solution with a pH of 2 has a hydrogen ion concentration that is _______________ the hydrogen ion concentration of a solution with a pH of 4. (a) 1/2 (b) 1/100 (c) 2 times (d) 10 times (e) 100 timesarrow_forwardWhich two statement about the substances in this experiment are true? A. Chalk is harder than quartz. B. Isopropyl alcohol boils more easily than vegetable oil. C. Water has a higher surface tension than soapy water. D. Saltwater has a higher surface tension than plain water.arrow_forward
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