Chemistry: Acids, Bases & Reactions

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Chem basics: acids, bases, indicators

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Eureka Trisha Balagbis

Philippines

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Chemistry: Acids, Bases & Reactions


Froggy Jumps Chemistry: Acids, Bases & ReactionsVersion en ligne Chem basics: acids, bases, indicators par Eureka Trisha Balagbis 1 Which substance is an acid? a A. Vinegar b B. Soap c C. Baking soda 2 Which property is typical of an acid in aqueous solution? a Turns blue litmus red b Turns pH above 7 c Turns red litmus blue 3 What happens to red litmus paper in a base? a Turns red b Turns blue c Stays red 4 What do acids generally produce when they react with metals? a Oxygen gas b Hydrogen gas c Chlorine gas 5 What is a chemical reaction? a A change in state only b A process that forms new substances c A physical change without new substances 6 Which of the following is a chemical change? a Boiling water b Rusting iron c Melting ice 7 In a balanced chemical equation, what is conserved? a The color of reactants b The speed of reaction c The total number of atoms on both sides 8 Which equation is balanced for the reaction of hydrogen and oxygen to form water? a H2 + O2 -> H2O b 2H2 + O2 -> 2H2O c H2 + O2 -> H2O2 9 What are the products of an acid-base neutralization? a Salt and water b Hydrochloric acid only c Hydrogen and oxygen 10 Which statement describes the law of conservation of mass? a Mass is neither created nor destroyed in a chemical reaction b Mass increases during reactions c Mass decreases during reactions 11 Which indicator turns pink in a base? a Phenolphthalein b Bromothymol blue c Methyl orange 12 Which substance is a base? a A. Lemon juice b B. Ammonia solution c C. Hydrochloric acid 13 What is the pH of a neutral solution? a 7 b 3 c 14 14 Which color does blue litmus paper turn in an acid? a Red b Blue c Green 15 Which color does red litmus paper turn in a base? a Red b Blue c Cyan 16 Which of the following has a pH greater than 7? a Water b Bleach c Vinegar 17 What ion do acids release in water? a H+ b OH- c Na+ 18 What ion do bases release in water? a H+ b OH- c Cl+ 19 Which household item is commonly used as a base? a Orange Juice b Baking Soda c Muriatic Acid 20 Which word best describes acids? a Tasteless b Sour c Slippery 21 Which word best describes bases? a Soft b Rough c Slippery 22 What is formed when an acid reacts with a base? a Salt and Chlorine b Salt and Gas c Salt and Water 23 The reactants in forming acidic salts includes: a Highly Alkaline + Weak Acid b Strong Acid + Weak Base c Strong Base + Strong Acid 24 Which indicator changes color depending on the pH of a solution? a pH cale b Litmus Paper c Thermometer 25 Which solution is most likely acidic? a pH 2 b pH 8 c pH 7 26 Which is a chemical change? a b c 27 What is the result of the chemical reaction here? a Release of heat b Precipitate Formation c Gas Bubbles 28 What could be the reactants for this reaction? a Vinegar + Lemon Extract b Vinegar + Baking Soda c Vinegar + Phenolpthalein 29 What type of chemical reaction is shown? a Synthesis b Decomposition c Combustion 30 Why is it that our skin become swollen after we got stung by a bee? a Bee sting contains alkaline b Bee sting contains acid. c Bee sting is neutral.

Chemistry: Acids, Bases & Reactions

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Chemistry: Acids, Bases & ReactionsVersion en ligne

par Eureka Trisha Balagbis

Which substance is an acid?

Which property is typical of an acid in aqueous solution?

What happens to red litmus paper in a base?

What do acids generally produce when they react with metals?

What is a chemical reaction?

Which of the following is a chemical change?

In a balanced chemical equation, what is conserved?

Which equation is balanced for the reaction of hydrogen and oxygen to form water?

What are the products of an acid-base neutralization?

Which statement describes the law of conservation of mass?

Which indicator turns pink in a base?

Which substance is a base?

What is the pH of a neutral solution?

Which color does blue litmus paper turn in an acid?

Which color does red litmus paper turn in a base?

Which of the following has a pH greater than 7?

What ion do acids release in water?

What ion do bases release in water?

Which household item is commonly used as a base?

Which word best describes acids?

Which word best describes bases?

What is formed when an acid reacts with a base?

The reactants in forming acidic salts includes:

Which indicator changes color depending on the pH of a solution?

Which solution is most likely acidic?

Which is a chemical change?

What is the result of the chemical reaction here?

What could be the reactants for this reaction?

What type of chemical reaction is shown?

Why is it that our skin become swollen after we got stung by a bee?