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IGCSE Chem124
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Question | Answer |
---|---|
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 |