Помогите с английским, плохо понял тему

V

1) If you mix red and white, it gets pink.
2) If you leave cheese in the sun, it melts.
3) If you stay in the sun too long, you get sunburnt.
4) If you practise maths hard, you learn it.
5) If you drink cold water, you have a sore throat.
6) If you offer tickets beforehand, you have no problems.
7) If you eat fast food every day, you have stomach problems.
8) If you work hard, you achieve success.
9) If you add lemon to tea, you get Russian tea.
10) If you heat paper, it burns.

2 Combine the sentences and write them in Conditional 1.
1) If she arrives, we will call her.
2) If the weather is fine, she will go for a walk.
3) If she buys tickets, we will go to the stadium.
4) If they go to the beach, they will do windsurfing.
5) If she takes diving lessons, she will become a champion.
6) If we ride a quad bike we will have a great time.
7) If they go to the seaside, they will get suntanned.
8) If I go to Italy, I will try local food.
9) If it is not cold, they will play badminton.
10) If he goes to the mountains, he will take nice photos.