Let s talk about the habits of people who have studied chemistry.

Obviously, Ca is the irregular motion of molecules, B is the movement of the boat, and D is the change in the temperature of milk, all of which are physical changes.

Personally, I feel like it's Jiraiya, as one of the three ninjas, Mizumon, Nagato, Naruto's master, and the strength naturally goes without saying, but such a powerful person is set up as a guy who is obsessed with women, which seems unreasonable, but in fact, the shaping is particularly successful, no one is perfect, and Jiraiya is the same, and this imperfection makes him more approachable.

I have a habit of cleanliness, anything I buy back must be washed with water at the faucet outside the house, afraid of the dust brought into the house, 365 days a day to wipe the furniture at home, every day to change the coat to wash by hand after the water has been cleaned, and then put in the washing machine to wash, never walk on the road for fear of dust on the body, in short, I am particularly afraid of dust.

When I was in junior high school, I played the guitar at the school party, and then, all kinds of boys in the same class liked to use it as a topic to talk about all kinds of embarrassing ...... >>>More

You can take a look at foreign chemistry textbooks, which can be combined with your own school textbooks, or you can read them in advance. The characteristic of foreign books is that many places are very clear, especially the very basic knowledge points. For example, Tsinghua University Press has published a translated "Fundamentals of Organic Chemistry" (you can't buy the original version online, you can only buy the printed kind), the book is very basic, and the post-class questions are more pertinent, not too in-depth, and this book can be read before formally studying organic chemistry. >>>More