MAKE IT YOURS
A world for every learner
Choose a grade to discover its colours and creative world.
Grade 9 Acids, Bases & pH Worksheet with Answers
Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Chemistry
Unit 5: Going FurtherAdvanced: Chemistry II PreviewNGSS HS-PS1-6Advanced
The pH scale, properties of acids and bases, neutralization and calculating pH. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
- Answer keys checked by code
- No ads, ever
- No student accounts needed
- Safety & privacy
Practice Sheetaethelsystems.comAcids, Bases & pH
Grade 9 · Chemistry
Name
Class
Date
Learning goal: Advanced: Chemistry II Preview · NGSS HS-PS1-6
Directions: Read each question carefully. Circle the correct choice or write your answer on the line.
Is lemon juice acidic or basic?
Answer: acidic
RememberThe pH scale
- 1
Is a pH of 3 acidic or basic?
AcidicBasic - 2
A solution has [H⁺] = 1 × 10^-5 mol/L. What is its pH?
- 3
A solution has [H⁺] = 1 × 10^-10 mol/L. What is its pH?
- 4
Bases release which ion in water?
- 5
Acids release which ion in water?
- 6
A solution has pH 13. What is [H⁺]?
- 7
What do an acid and a base make when they neutralize?
- 8
A solution has pH 4. What is [H⁺]?
- 9
What color does litmus paper turn in an acid?
- 10
A solution has pH 5. What is [H⁺]?
- 11
A solution has pH 12. What is [H⁺]?
- 12
A solution has pH 1. What is [H⁺]?
★ Challenge corner for fast finishers
You are in a closed room with a candle, a match and a lamp. What do you light first?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/chemistry/9/acids_bases
Answer key — Acids, Bases & pH (Grade 9)
- 1.acidic
- 2.5
- 3.10
- 4.hydroxide ions (OH⁻)
- 5.hydrogen ions (H⁺)
- 6.1 × 10^-13 mol/L
- 7.a salt and water
- 8.1 × 10^-4 mol/L
- 9.red
- 10.1 × 10^-5 mol/L
- 11.1 × 10^-12 mol/L
- 12.1 × 10^-1 mol/L
- ★the match
Answer key (click to show)
- 1.acidic
- 2.5
- 3.10
- 4.hydroxide ions (OH⁻)
- 5.hydrogen ions (H⁺)
- 6.1 × 10^-13 mol/L
- 7.a salt and water
- 8.1 × 10^-4 mol/L
- 9.red
- 10.1 × 10^-5 mol/L
- 11.1 × 10^-12 mol/L
- 12.1 × 10^-1 mol/L
- ★the match (challenge corner)
Need another Acids, Bases & pH worksheet?
Generate unlimited fresh versions at easy, medium or hard difficulty, each with its own answer key. Free during our launch — no card needed.
Create a free accountHow to use this worksheet
- Use it for revision before a test, as homework, or as a timed practice set.
- Students can self-mark with the answer key and note which question types they got wrong.
- Generate several versions of the same topic for spaced practice in the weeks before an exam.
Related worksheets
Can't find what you need? Tell us which worksheet to make next.
Frequently asked questions
Does this Grade 9 Acids, Bases & pH worksheet come with answers?
Yes. The full answer key is on this page, and it prints on its own page after the questions. Every answer is calculated or checked by code rather than written by an AI model, so the key is always correct.
How do I print it or save it as a PDF?
Click "Download PDF" to save a ready-to-print PDF with the answer key on the last page, or click "Print" to send the worksheet and answer key straight to your printer.
Can I get a different Acids, Bases & pH worksheet?
Yes. Create a free account to generate as many fresh Grade 9 Acids, Bases & pH worksheets as you like, at easy, medium or hard difficulty, each with its own answer key.
Is this worksheet free?
Yes. This worksheet is free to print, and Practice Sheet is free to use during our launch with no card needed.