is the chemical reaction where an acid and an alkali cancel each other out. The general word equation is essential to memorize:
| Question Number | Question | Correct Answer | | :--- | :--- | :--- | | 1 | What is the name for a chemical that changes color in an acid or alkali? | | | 2 | What color does litmus paper turn in an acid? | Red | | 3 | What color does litmus paper turn in an alkali? | Blue | | 4 | Which of the following is a strong acid found in the lab? (Options: Vinegar, Lemon juice, Sulfuric acid, Water) | Sulfuric acid | | 5 | A substance with a pH of 7 is... | Neutral | | 6 | Which hazard symbol would you find on a bottle of sodium hydroxide? | Corrosive | | 7 | What is the reaction between an acid and an alkali called? | Neutralization | | 8 | What two products are always made when an acid neutralizes an alkali? | Salt + Water | | 9 | To treat an acid bee sting, you should use a weak... | Alkali (e.g., baking soda) | | 10 | To treat an alkaline wasp sting, you should use a weak... | Acid (e.g., vinegar) | | 11 | Which of these is a weak acid? (Vinegar / Battery acid) | Vinegar | | 12 | A pH of 3 is... | Strongly acidic | | 13 | A pH of 11 is... | Strongly alkaline | | 14 | What is the range of the pH scale? | 0 to 14 | | 15 | Universal indicator turns green at pH 7. What color at pH 9? | Blue (or dark blue) | | 16 | Which gas is released when magnesium reacts with hydrochloric acid? | Hydrogen | | 17 | A substance that is "dangerous to the environment" has a symbol featuring a... | Dead fish and tree | | 18 | What is the chemical name for baking soda? | Sodium bicarbonate | | 19 | Indigestion tablets work by... | Neutralizing excess stomach acid | | 20 | If you spill acid on your skin, what should you do first? | Wash with plenty of water | exploring science 7f quick quiz answers
Need more help? The Exploring Science 7F topics continue into "Using indicators to find unknown pH" and "Everyday neutralization in farming and medicine." Leave a comment below if you need the answers for the 7F End-of-Unit Test (standard demand or high demand) — they follow the same principles but with more complex word equations. is the chemical reaction where an acid and
The Quick Quiz for this unit is designed to test three core pillars of knowledge: | Red | | 3 | What color does litmus paper turn in an alkali
Burning wood produces new substances (ash, smoke, gases) that cannot easily be turned back into wood. Cutting wood just makes smaller pieces – it’s still wood (physical change).