1) Which statement best describes acids? a) Taste sweet, feel slippery, turn litmus blue b) Taste sour, conduct electricity, turn litmus red c) Taste bitter, feel rough, turn litmus blue d) Taste salty, turn litmus green 2) Which property is true for bases? a) Taste sour b) Conduct electricity poorly c) Have pH lower than 7 d) taste bitter 3) Which of the following substances is neutral? a) Vinegar b) B) Soap c) C) Pure water d) D) Lemon juice 4) Which is a strong base? a) Sodium hydroxide (NaOH) b) B) Ammonia solution c) C) Baking soda (NaHCO₃) d) D) Milk of magnesia 5) Which of the following is a strong acid? a) Vinegar (acetic acid) b) B) Hydrochloric acid (HCl) c) C) Lemon juice (citric acid) d) D) Carbonic acid in soda

LESSON 3

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