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Preview questions
1. What is the taste of acids?
Bitter · Sour · Salty · Sweet
2. Which of the following is a common property of bases?
Sour taste · Slippery feel · Reacts with metals · Turns blue litmus red
3. What color does litmus paper turn in acidic solutions?
Blue · Red · Green · Yellow
4. Which of the following substances is an acid?
Sodium hydroxide · Hydrochloric acid · Calcium carbonate · Potassium chloride
5. What is the pH range of acids?
0-7 · 7-14 · 14-20 · 7
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