Chemical ChangesHigh Exam FrequencyAQA

Acids and Alkalis

Revise Acids and Alkalis in Chemical Changes for GCSE Chemistry with 20 exam-style questions and 20 flashcards. This is a high-frequency exam topic, so students should expect to explain it clearly under timed conditions.

Sample Flashcards

Name two common alkalis
Sodium hydroxide (NaOH), Potassium hydroxide (KOH)
What is universal indicator?
An indicator that shows a range of colours across the pH scale (rainbow of colours from red to purple)

Sample Questions

Which ion do acids produce when dissolved in water?

  • A. Hydroxide ions (OH⁻)
  • B. Oxide ions (O²⁻)
  • C. Hydrogen ions (H⁺)
  • D. Sodium ions (Na⁺)
1 markfoundation

Explain the difference between a strong acid and a concentrated acid.

2 marksstandard

20

exam-style questions

20

revision flashcards

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