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IGCSE Chem124

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QuestionAnswer
What element do all acids contain? What ion makes an acid acidic? Hydrogen
What is the chemical symbol for hydrogen? H
What is the chemical symbol for carbon? C
What is the chemical symbol for oxygen? O
What is the molecular formula for hydroxide? OH-
What is the formula for sulfuric acid? H2SO4
What is the formula for hydrochloric acid? HCl
What is HCl? hydrochloric acid
What is H2SO4? sulfuric acid
What is ammonia? NH3
What is the pH of an acid? Less than 7.
What is a neutral pH? 7
What does "dilute" mean? A solution is weakened by adding extra water or other liquid.
What does "concentrated" mean? A solution is strong because it doesn't have a lot of water or other liquid added to it.
Which ion is in excess in an alkali solution? OH-
Why does Venus' atmosphere destroy space probes? The atmosphere of Venus is full of sulfuric acid from volcanoes.
What does mixing S(s) + O2(g) produce? SO2
What does mixing C(s) + O2(g) produce? CO2
What is the formula for sulfur dioxide? SO2
What is the formula for carbon dioxide? CO2
Created by: rmacfie
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