Which of the following are chemical processes?
1. Ripening of an apple
2. Freezing water
3. decomposition of water into hydrogen and oxygen gas
4. Compression of oxygen gas
Answer: 1 and 3
Which of the following are chemical processes?
1. Ripening of an apple
2. Freezing water
3. decomposition of water into hydrogen and oxygen gas
4. Compression of oxygen gas
Answer: 1 and 3