Tính chất hóa học của acid
Quiz by thien dao
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15 questions
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- Q1Which of the following is a common use of acids in everyday life?Coloring fabrics with dyes.Cleaning agents like vinegar and lemon juice.Preserving food with salt.Making bread rise.30s
- Q2What type of ion do acids donate to solutions?Hydrogen ions (H+)Sodium ions (Na+)Calcium ions (Ca2+)Chloride ions (Cl-)30s
- Q3What happens to litmus paper when it comes into contact with an acid?It remains unchanged.It turns blue.It turns green.It turns red.30s
- Q4What is the taste commonly associated with acids?SourSaltySweetBitter30s
- Q5Which of the following is a characteristic reaction of acids?Acids react with bases to form salts and water.Acids do not react with any substances.Acids react with water to produce carbon dioxide.Acids react with metals to produce oxygen gas.30s
- Q6What is one common property of acids when they are dissolved in water?They produce oxygen gas (O2) in solution.They produce hydrogen ions (H+) in solution.They increase the concentration of hydroxide ions (OH-).They turn blue litmus paper red.30s
- Q7Which of the following is an example of a strong acid?Hydrochloric acid (HCl).Carbonic acid (H2CO3).Acetic acid (CH3COOH).Citric acid (C6H8O7).30s
- Q8What is the effect of acids on metals?Acids make metals shine.Acids have no effect on metals.Acids can corrode metals and produce hydrogen gas.Acids strengthen metals.30s
- Q9What do acids release when dissolved in water?Hydrogen ions (H+).Chloride ions (Cl-).Sodium ions (Na+).Oxygen ions (O2-).30s
- Q10Which of the following is a common use of acids in everyday life?Acids are primarily used in baking powder.Acids are used to sweeten foods.Acids are used to make paper.Cleaning agents often contain acids.30s
- Q11What happens to an acid when it is diluted with water?It becomes more corrosive.It produces a less concentrated solution.It loses its acidity completely.It turns into a base.30s
- Q12What is the taste associated with most acids?Salty flavor.Sweet flavor.Bitter flavor.Sour flavor.30s
- Q13What is produced when an acid reacts with a carbonate?Carbon dioxide gas is produced.Nitrogen gas is produced.Oxygen gas is produced.Helium gas is produced.30s
- Q14Which of the following statements is true about acids?Acids are always harmful to living organisms.Acids have a pH less than 7.Acids do not conduct electricity.Acids have a pH greater than 14.30s
- Q15What is one common reaction that acids undergo?Acids explode when mixed with water.Acids react with bases to produce salt and water.Acids react with metals to produce hydrogen gas.Acids decompose into simpler substances.30s