complete the following statements using the ph scale provided when necessary.
neutral oh 8 alkalinity ten
one thousand 14 stomach acid acidic 0
30 one hundred equal 6
the ph scale ranges from to
and is used to indicate the
of a solution.
a solution with a(n) ph has a(n)
number of h⁺ and oh⁻ ions.
in both directions on the scale, between the whole number
value, there is a difference of times the
concentration of hydrogen ions and hydroxide ions. a ph of 5
is 100 times more acidic than a ph of 7.
sea water, which has a ph of , has a higher
concentration of than urine, which has a ph
of .
there is times as much oh⁻ in household
ammonia as there is in seawater.

Question

complete the following statements using the ph scale provided when necessary.
neutral  oh  8  alkalinity  ten
one thousand  14  stomach acid  acidic  0
30  one hundred  equal  6
the ph scale ranges from  to
and is used to indicate the
of a solution.
a solution with a(n)  ph has a(n)
number of h⁺ and oh⁻ ions.
in both directions on the scale, between the whole number
value, there is a difference of  times the
concentration of hydrogen ions and hydroxide ions. a ph of 5
is 100 times more acidic than a ph of 7.
sea water, which has a ph of , has a higher
concentration of  than urine, which has a ph
of .
there is  times as much oh⁻ in household
ammonia as there is in seawater.

Accepted Answer

### 1. The pH scale ranges from ______ to ______ and is used to indicate the ______ of a solution.
# Brief Explanations:
From the pH scale diagram, the lowest pH value shown is 0 (hydrochloric acid) and the highest is 14 (sodium hydroxide). The pH scale measures the acidity or alkalinity (also called the nature, but more precisely the hydrogen ion concentration - related to acidic/alkaline nature) of a solution. So we use 0, 14, and the term related to the nature (acidic/alkaline, but the options have "acidity/alkalinity" - but looking at options, "acidity" or "alkalinity" but the scale indicates the acidic or alkaline nature, but the options given: the third blank - looking at options, the terms are "acidity", "alkalinity", "neutral", etc. Wait, the pH scale indicates the acidity or alkalinity (the nature, so the correct term from options: the options have "acidity" (but actually it's about acidic/alkaline, but the options include "acidity" or "alkalinity" but the scale is for indicating if a solution is acidic, neutral, or alkaline. Wait, the options given: the first two blanks: 0 and 14 (from the options: 0, 14 are present). The third blank: the options have "acidity" (but actually pH indicates the acidic or alkaline nature, but the options include "acidity" (maybe a bit simplified). So:
First blank: 0 (from options: 0 is an option)
Second blank: 14 (from options: 14 is an option)
Third blank: "acidity" (but actually it's the acidic or alkaline nature, but the options have "acidity" - maybe the question expects "acidity" or "alkalinity" but the scale is for indicating the acidic/alkaline nature, so "acidity" (or "alkalinity" but the options have "acidity" as an option? Wait, the options given in the word bank: "neutral", "OH", "8", "alkalinity", "ten", "one thousand", "14", "stomach acid", "acidic", "0". Wait, maybe the third blank is "acidity" (but the options have "acidic" no, wait the word bank: the terms are "neutral", "OH", "8", "alkalinity", "ten", "one thousand", "14", "stomach acid", "acidic", "0", "30", "one hundred", "equal", "6". Wait, maybe the third blank is "acidity" but the word bank has "acidic" no, wait the question is to fill from the word bank. Wait the word bank options: 0, 14, and the third term: the pH scale indicates the acidity or alkalinity, but the word bank has "acidity" (no, the word bank has "acidic" (adjective) but the blank needs a noun? Wait the word bank has "acidity" (noun) - no, the word bank given: let's list the options again:
Options (word bank): neutral, OH, 8, alkalinity, ten, one thousand, 14, stomach acid, acidic, 0, 30, one hundred, equal, 6.
So first blank: 0 (option)
Second blank: 14 (option)
Third blank: "acidity" - no, the word bank has "alkalinity" or "acidity"? Wait the pH scale is used to indicate the acidity or alkalinity (the level of H+ and OH-). But the word bank has "alkalinity" and "acidity". Wait, maybe the question is simplified: pH scale ranges from 0 to 14 and indicates the acidity (or alkalinity) of a solution. So:
First blank: 0
Second blank: 14
Third blank: "acidity" (but actually it's about acidic/alkaline, but the word bank has "acidity" as a noun? Wait no, "acidic" is an adjective. Wait maybe the third blank is "acidity" (but the word bank has "alkalinity" and "acidity" (no, the word bank has "alkalinity" (noun) and "acidic" (adjective). Wait, maybe the question has a typo, but from the options, the first two are 0 and 14, and the third is "acidity" (but the word bank has "alkalinity" or "acidic". Wait, let's check the diagram: the pH scale goes from 0 (most acidic) to 14 (most alkaline), and it's used to indicate if a solution is acidic, neutral, or alkaline. So the third blank: the word bank has "acidic" (adjective) but the blank needs a noun. Wait, maybe the question means "acidity" (but the word bank has "alkalinity" (noun). Wait, perhaps the correct answer is 0, 14, and "acidity" (but the word bank has "alkalinity" - no, maybe the third blank is "alkalinity" no. Wait, let's proceed with the options:
First blank: 0 (option)
Second blank: 14 (option)
Third blank: "acidity" (but the word bank has "acidic" - no, maybe the question is using "acidity" as the term. So:
# Answer:
0, 14, acidity (but wait the word bank has "acidic" (adjective) and "alkalinity" (noun). Wait, maybe the third blank is "alkalinity" no. Wait, the pH scale indicates the acidic or alkaline nature, so the correct term from the word bank: the word bank has "alkalinity" (noun) and "acidic" (adjective). Maybe the question expects "acidity" but the word bank has "alkalinity" - no, perhaps I made a mistake. Let's recheck: the pH scale ranges from 0 to 14, and it's used to indicate the acidity (or alkalinity) of a solution. So the first two blanks are 0 and 14, the third is "acidity" (but the word bank has "acidic" - no, the word bank has "acidic" as an option. Wait, the word bank options: "neutral", "OH", "8", "alkalinity", "ten", "one thousand", "14", "stomach acid", "acidic", "0", "30", "one hundred", "equal", "6". So "acidic" is an adjective, but the blank needs a noun. Maybe the question is simplified, so:
First blank: 0
Second blank: 14
Third blank: "acidic" (no, that doesn't make sense). Wait, maybe the third blank is "neutral" no. Wait, the pH scale is used to indicate the acidity or alkalinity (the nature), so the correct term from the word bank: "alkalinity" is a noun, but "acidity" is also a noun. Wait, the word bank has "alkalinity" and "acidic" (adjective). Maybe the answer is 0, 14, and "alkalinity" no. I think the intended answer is 0, 14, and "acidity" (even though technically it's about acidic/alkaline, but the options have "acidity" as a noun - maybe a simplification). So:
# Answer:
0, 14, acidity (but wait the word bank has "acidic" - maybe the question has a mistake, but from the options, 0 and 14 are present, and "acidity" is the closest term for the third blank.

### 2. A solution with a(n) ______ pH has a(n) ______ number of H⁺ and OH⁻ ions.
# Brief Explanations:
From the pH scale diagram, at pH 7 (neutral), the concentration of H⁺ and OH⁻ ions is equal (from the diagram: [H⁺] = [OH⁻] at neutral pH). So the first blank: "neutral" (from options: "neutral" is an option). The second blank: "equal" (from options: "equal" is an option). So:
First blank: neutral (option)
Second blank: equal (option)
# Answer:
neutral, equal

### 3. In both directions on the scale, between the whole number value, there is a difference of ______ times the concentration of hydrogen ions and hydroxide ions. A pH of 5 is 100 times more acidic than a pH of 7.
# Brief Explanations:
The pH scale is logarithmic, meaning each whole number change in pH represents a ten - fold change in H⁺ concentration (and thus OH⁻ concentration as well, since [H⁺][OH⁻] = 10⁻¹⁴ at 25°C). For example, a pH of 1 has 10 times more H⁺ than pH 2, 100 times more than pH 3, etc. The options given include "ten" (from the word bank: "ten" is an option). So the blank should be "ten".
# Answer:
ten

### 4. Sea water, which has a pH of ______, has a higher concentration of ______ than urine, which has a pH of ______.
# Brief Explanations:
From the pH scale diagram, sea water is at pH 8 (from the diagram: sea water is at 8). Urine is at pH 6 (from the diagram: urine is at 6). A higher pH (more than 7) means the solution is basic (alkaline), so it has a higher concentration of OH⁻ ions (from the options: "OH" is an option). So:
First blank: 8 (option)
Second blank: OH (option)
Third blank: 6 (option)
# Answer:
8, OH, 6

### 5. There is ______ times as much OH⁻ in household ammonia as there is in seawater.
# Brief Explanations:
Household ammonia has a pH of 11 (from the diagram: household ammonia is at 11), and seawater has a pH of 8. The difference in pH is 11 - 8 = 3. Since each pH unit represents a ten - fold change in OH⁻ concentration (because pH + pOH = 14, so a change in pH of 1 is a change in pOH of 1, and [OH⁻] = 10⁻ᵖᴼᴴ, so a change of 1 in pOH is a ten - fold change in [OH⁻]). So a difference of 3 pH units means a 10³ = 1000 - fold change? Wait no, wait household ammonia pH is 11, seawater pH is 8. pOH of seawater: 14 - 8 = 6, so [OH⁻] = 10⁻⁶. pOH of household ammonia: 14 - 11 = 3, so [OH⁻] = 10⁻³. So the ratio of [OH⁻] in ammonia to seawater is (10⁻³)/(10⁻⁶) = 1000. But the options given include "one thousand" (from the word bank: "one thousand" is an option). Wait, but let's check the pH values again. Wait, maybe I made a mistake in pH values. Wait the diagram: household ammonia is at 11, seawater at 8. The difference in pH is 3, so the change in [OH⁻] is 10^(3) = 1000? Wait no, wait pH 8: pOH = 6, [OH⁻] = 10⁻⁶. pH 11: pOH = 3, [OH⁻] = 10⁻³. So 10⁻³ / 10⁻⁶ = 1000. So the blank is "one thousand". But wait the options: the word bank has "one thousand" (option). So:
# Answer:
one thousand

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QUESTION IMAGE

Question

Explanation:

1. The pH scale ranges from to and is used to indicate the __ of a solution.

Answer:

QUESTION IMAGE

Question

Explanation:

1. The pH scale ranges from ____ to __ and is used to indicate the ____ of a solution.

Answer:

1. The pH scale ranges from to and is used to indicate the __ of a solution.