Problem: Solve the worksheet on Acids, Bases, and the pH Scale
####
Q.1. Fill in the blanks with suitable words.
Let's solve each part step by step:
a) pH is a measure of ________ ions.
- The pH scale measures the concentration of
hydrogen ions (H⁺) in a solution.
-
Answer: hydrogen
b) 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
c) pH scale ranges from ______ to ______.
- The pH scale ranges from
0 to 14.
-
Answer: 0, 14
d) A solution has a pH of 7, is ________.
- A pH of 7 indicates that the solution is
neutral.
-
Answer: neutral
e) A pH less than 7 is an ________. A pH closest to ______ indicates stronger acids.
- A pH less than 7 indicates an
acidic solution.
- The closer the pH is to
0, the stronger the acid.
-
Answer: acidic, 0
f) A pH greater than 7 is a ________. A pH closest to ______ indicates stronger bases.
- A pH greater than 7 indicates a
basic solution.
- The closer the pH is to
14, the stronger the base.
-
Answer: basic, 14
---
####
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 7.
3.
Basic: pH values above 7.
From the image:
- The left side (pH 0–6) is labeled as
acidic.
- The middle (pH 7) is labeled as
neutral.
- The right side (pH 8–14) is labeled as
basic.
So, we need to fill in the blanks accordingly:
- The leftmost box corresponds to the
acidic range.
- The middle box corresponds to the
neutral range.
- The rightmost box corresponds to the
basic range.
Answer:
- Leftmost box:
acidic
- Middle box:
neutral
- Rightmost box:
basic
---
Final Answers:
####
Q.1:
a) hydrogen
b) pH scale
c) 0, 14
d) neutral
e) acidic, 0
f) basic, 14
####
Q.2:
- Leftmost box:
acidic
- Middle box:
neutral
- Rightmost box:
basic
Boxed Final Answer:
\[
\boxed{
\text{a) hydrogen, b) pH scale, c) 0, 14, d) neutral, e) acidic, 0, f) basic, 14}
}
\]
\[
\boxed{
\text{Leftmost: acidic, Middle: neutral, Rightmost: basic}
}
\]
Parent Tip: Review the logic above to help your child master the concept of ph scale worksheet.
