Acids, Bases, and Salts

Froggy Jumps

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Lea

Philippines

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Acids, Bases, and Salts


Froggy Jumps Acids, Bases, and SaltsVersion en ligne Help Froggy identify the correct answer! par Lea 1 Which of the following is an example of strong acid? a NaOH b HCl c NaCl 2 Which substance is commonly used as a base? a Vinegar b Orange juice c Baking soda 3 What is usually formed when acid reacts with base? a salt and water b salt and carbon dioxide c acid and hydrogen 4 Which of the following is a salt? a HCl b NaCl c NaOH 5 A substance has a pH of 3. What can you conclude about it? a It is strongly basic. b It is acidic. c It is neutral. 6 According to the Arrhenius definition, a base is substance that: a produces H+ ions in water b produces OH- ions in water c produces both H+ and H- in water 7 Which statement correctly describes a conjugate acid-base pair? a They differ by one proton (H+). b They differ by one hydroxide ion (OH-). c They always have the same charge. 8 Blue litmus paper when dipped in acid will turn to: a Blue b Red c Yellow 9 If a red onion extract is added to a unknown solution and turned green in color. What does this indicates? a The solution is acidic. b The solution is basic. c The solution is salt. 10 Why can red onion be used as natural indicator? a It contain proteins that produces bubbles. b It contains pigment that responds to pH. c It produces oxygen when mixed with acidic and basic substances.