Neutralisation and naming salts
8th grade (Year 9 in England) · 16 questions · Common Core: NGSS.MS-PS1-2, NGSS.HS-PS1-2 · England: KS3 Chemistry: Chemical reactions, KS4 Combined Science: Chemical changes
Name
Date
Score/ 16
Question 1
20 cm³ of an acid starts at pH 2. An alkali is added 10 cm³ at a time. The pH readings are 2, 4, 5, 7. What total volume of alkali made the solution neutral, in cm³?
Answercm³
Question 2
Which gas is produced when a carbonate reacts with an acid?
- A. oxygen
- B. hydrogen
- C. nitrogen
- D. carbon dioxide
Question 3
Name the salt: calcium carbonate + nitric acid → ___ + water + carbon dioxide
- A. calcium nitrate
- B. calcium sulfate
- C. calcium oxide
- D. calcium chloride
Question 4
20 cm³ of an acid starts at pH 1. An alkali is added 5 cm³ at a time. The pH readings are 1, 4, 7. What total volume of alkali made the solution neutral, in cm³?
Answercm³
Question 5
A farmer's soil is too acidic. What could they add?
- A. vinegar
- B. lime (calcium hydroxide), a base
- C. lemon juice
- D. sulfuric acid
Question 6
Name the salt: zinc + nitric acid → ___ + hydrogen
- A. zinc sulfate
- B. zinc chloride
- C. zinc nitrate
- D. zinc oxide
Question 7
25 cm³ of an acid starts at pH 1. An alkali is added 5 cm³ at a time. The pH readings are 1, 3, 5, 7. What total volume of alkali made the solution neutral, in cm³?
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Question 8
What are the products when an acid neutralises an alkali?
- A. an acid and a base
- B. a salt and hydrogen
- C. a salt and water
- D. oxygen and water
Question 9
Name the salt: zinc + sulfuric acid → ___ + hydrogen
- A. zinc nitrate
- B. zinc sulfate
- C. zinc chloride
- D. zinc oxide
Question 10
20 cm³ of an acid starts at pH 1. An alkali is added 10 cm³ at a time. The pH readings are 1, 4, 7. What total volume of alkali made the solution neutral, in cm³?
Answercm³
Question 11
Which gas is produced when a metal reacts with an acid?
- A. carbon dioxide
- B. oxygen
- C. chlorine
- D. hydrogen
Question 12
Name the salt: calcium carbonate + sulfuric acid → ___ + water + carbon dioxide
- A. calcium oxide
- B. calcium chloride
- C. calcium sulfate
- D. calcium nitrate
Question 13
20 cm³ of an acid starts at pH 2. An alkali is added 5 cm³ at a time. The pH readings are 2, 5, 7. What total volume of alkali made the solution neutral, in cm³?
Answercm³
Question 14
A farmer's soil is too acidic. What could they add?
- A. vinegar
- B. sulfuric acid
- C. lemon juice
- D. lime (calcium hydroxide), a base
Question 15
Name the salt: copper carbonate + nitric acid → ___ + water + carbon dioxide
- A. copper nitrate
- B. copper oxide
- C. copper sulfate
- D. copper chloride
Question 16
20 cm³ of an acid starts at pH 2. An alkali is added 5 cm³ at a time. The pH readings are 2, 4, 5, 7. What total volume of alkali made the solution neutral, in cm³?
Answercm³
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