Acids in the kitchen The 15 questions of lesson 15 «Acids in the kitchen» of the chemistry course of Mova's primary school with their options, 85 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: the lesson at school .
t1 Sophie licks a sour sweet and it stings her tongue. Why? right ✓ t2 "stomach acid is strong, so why isn't there a hole in me?" What's the answer? right ✓ t3 Harry: "dock leaves are a proper chemical cure for nettles, they cancel the acid". What's true? right ✓ t4 If you left milk with a squeeze of lemon on a warm stove, what would you get? right ✓ t5 "dad's car battery is dead, can i open it and see?" What should the answer be? right ✓ t6 Why are some old stone statues losing their faces? wrong ✗ t7 Ava says all acids are dangerous and you should never eat one. What's true? wrong ✗ t8 In a cartoon, a hero drinks car-battery acid "for energy". What's wrong with that? right ✓ t9 Which tastes most sour? wrong ✗ t10 "why's my curry stinging the ulcer in my mouth? there's tomato in it". What's going on? wrong ✗ t11 Nan: "vinegar's made from wine". Teen: "lol no it's from lemons". Who's closer? wrong ✗ e1 Identify the substance principally responsible for the sour taste of the lemon. wrong ✗ · exam e2 It is given that pickled vegetables remain edible for several months when stored in vinegar. Ascertain the principal reason. wrong ✗ · exam e3 Which of the following statements most accurately characterises the protection of the stomach against its own acid? right ✓ · exam e4 Select the response consistent with the established facts concerning acid rain. wrong ✗ · exam ← previous
Tarnish and how metals change
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Alkalis and soda, and how they cancel acids
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