Problem Analysis:
The task involves filling in blanks related to the pH scale, which measures the acidity or basicity of a substance. The pH scale ranges from 0 to 14, with specific values indicating whether a solution is acidic, neutral, or basic. Let's solve each part step by step.
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Q.1: Fill in the blanks with suitable words.
####
a) The ___________ measures how acidic or basic a substance is.
- The pH scale is used to measure the acidity or basicity of a substance.
-
Answer: pH scale
####
b) pH scale ranges from ___________ to ___________.
- The pH scale ranges from 0 to 14.
-
Answer: 0 to 14
####
c) A solution has a pH of 7, it's ___________.
- A pH of 7 is considered neutral, meaning the solution is neither acidic nor basic.
-
Answer: neutral
####
d) A pH less than 7 is an ___________, with ___________ numbers indicating stronger acids.
- A pH less than 7 indicates an acidic solution.
- Lower pH values (closer to 0) indicate stronger acids.
-
Answer: acid, lower
####
e) A pH greater than 7 is a ___________, with ___________ numbers indicating stronger bases.
- A pH greater than 7 indicates a basic solution.
- Higher pH values (closer to 14) indicate stronger bases.
-
Answer: base, higher
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Q.2: Fill the blanks with following words to identify ranges of the pH scale.
The pH scale is divided into three main regions:
1.
Acidic: pH values below 7.
2.
Neutral: pH value of exactly 7.
3.
Basic: pH values above 7.
From the image provided:
- The left side of the pH scale (values 0–6) is colored red to yellow, indicating acidity.
- The middle (value 7) is green, indicating neutrality.
- The right side (values 8–14) is blue to purple, indicating basicity.
####
Filling the blanks:
- The leftmost box corresponds to the range
0–6, which is acidic.
- The middle box corresponds to the value
7, which is neutral.
- The rightmost box corresponds to the range
8–14, which is basic.
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Final Answers:
####
Q.1:
a) pH scale
b) 0 to 14
c) neutral
d) acid, lower
e) base, higher
####
Q.2:
- Leftmost box:
acidic
- Middle box:
neutral
- Rightmost box:
basic
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Boxed Final Answer:
\[
\boxed{
\text{a) pH scale, b) 0 to 14, c) neutral, d) acid, lower, e) base, higher}
}
\]
\[
\boxed{\text{acidic, neutral, basic}}
\]
Parent Tip: Review the logic above to help your child master the concept of ph worksheet middle school.
