F2 | Integrated Science Exam Paper

(b) Is lemon juice acidic, basic, or neutral? (1 mark) (c) Name another natural indicator besides universal indicator. (1 mark) (d) Describe what happens when an acid reacts with a base. (2 marks) (e) Write the word equation for the reaction between hydrochloric acid and sodium hydroxide. (3 marks) Total marks: 50

Time: 1 hour 30 minutes Total Marks: 50

| Liquid | Colour of indicator | pH | |--------|--------------------|----| | Lemon juice | Red | 2 | | Soap solution | Blue | ___ | | Water | Green | 7 | f2 integrated science exam paper

(6 marks)

(a) Complete the pH for soap solution in the table. (1 mark) (b) Is lemon juice acidic, basic, or neutral