Here are 10 One-Word Answer Type Questions from the topic Chemical Change (from your provided PDF), with answers and explanations after each question as requested:
One-Word Answer Type Questions
Topic: Chemical Change
1. Question: What type of change is burning of wood?
• Answer: Chemical
• Explanation: Burning of wood is a chemical change as new substances like ash and gases are formed.
2. Question: What type of change is rusting of iron?
• Answer: Chemical
• Explanation: Rusting of iron is a chemical change because a new substance, rust, is formed.
3. Question: What is formed when milk turns sour?
• Answer: Lactic acid
• Explanation: When milk turns sour, lactic acid is formed, showing a chemical change.
4. Question: What type of change is digestion of food?
• Answer: Chemical
• Explanation: Digestion is a chemical change because food is broken down into new substances.
5. Question: What type of change is formation of curd from milk?
• Answer: Chemical
• Explanation: Curd formation is a chemical change as it cannot be reversed and a new substance is formed.
6. Question: What is produced along with ash when paper burns?
• Answer: Smoke
• Explanation: Burning of paper produces smoke and ash, indicating a chemical change.
7. Question: What type of change is cooking of food?
• Answer: Chemical
• Explanation: Cooking of food is a chemical change as new substances are formed and the change is irreversible.
8. Question: What is formed on iron during rusting?
• Answer: Rust
• Explanation: Rust is a brown substance formed on iron due to a chemical reaction with oxygen and water.
9. Question: What type of change is the reaction of vinegar and baking soda?
• Answer: Chemical
• Explanation: The reaction of vinegar and baking soda produces carbon dioxide gas, a chemical change.
10. Question: What is released during many chemical changes?
• Answer: Heat
• Explanation: Many chemical changes release heat, light, or gas.
If you want, I can now prepare the next set from the topic Rusting of Iron in the same one-word format.
Shall I proceed?
