BSX Science Year 8 Chemical Changes

What name is given to a 'base' that can dissolve in water? (a)  

• Alkali
• Acid
• Don'tKnow/Can't remember

What part of the formula tells us that a solution is an alkali? (a)  

• The presence of H (hydrogen)
• The presence of OH (hydroxide)
• The metal part
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Which is the correct equation for a neutralisation reaction?

• Acid + Alkali → Salt + Water
• Acid + Alkali → Neutral
• Acid + Alkali → Solution
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Name the salt formed in this neutralisation reaction: HCl + NaOH (a)  

• HOH
• NaCl
• H₂O
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Name the salt formed in this neutralisation reaction: HCl + KOH (a)  

• HOH
• KCl
• H₂O
• Don't know/Can't remember

Name the salt formed in this neutralisation reaction: HCl + NaOH (a)  

• Sodium chloride
• Sodium bicarbonate
• Sodium hydroxide
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Name the salt formed in this neutralisation reaction: HCl + KOH (a)  

• Potassium chloride
• Poatssium permanganate
• Potassium hydroxide
• Don't know/Can't remember

In the test for carbon dioxide, what liquid is used to test for the presence of the gas? (a)  

• Water
• Lime juice
• Limewater
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In the test for carbon dioxide, what colour is the testing liquid before the gas is bubbled through it?

• Clear
• Cloudy
• Green
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In the test for carbon dioxide, what colour is the testing liquid after the gas is bubbled through it?

• Clear
• Cloudy
• Green
• Don't know/Can't remember