1. If you *heat* ice, it *melts*.
Hint: Usa il present simple per “riscaldare” e “sciogliersi” (legge fisica).
2. If people *eat* too much, they *get* fat.
Hint: Present simple, “mangiare troppo” e “diventare grassi” (fatto generale).
3. If water *reaches* 100°C, it *boils*.
Hint: Il verbo “reach” (raggiungere) e “boil” (bollire) al present simple.
4. If it *rains*, the grass *grows*.
Hint: “Rain” e “grow” al present simple nel condizionale zero.
5. If you *mix* red and blue, you *get* purple.
Hint: Azione generale/scientifica, present simple.
6. If the sun *shines*, it *gets* warm.
Hint: “Shine” e “get” al present simple.
7. If babies *are* hungry, they *cry*.
Hint: Present simple di “be” e “cry”.
8. If you *press* this button, the computer *turns* on.
Hint: Present simple, azione automatica/sempre vera.
9. If you *don’t water* the plants, they *die*.
Hint: Negazione nel present simple e “die” (morire) presente.
10. If the teacher *asks* a question, the students *answer*.
Hint: Present simple “ask” e “answer”.

1. If I *wake* up late, I *miss* the bus.
Hint: Azione di routine, present simple di “wake” e “miss”.
2. If you *don’t wear* a coat, you *get* cold.
Hint: Negazione e conseguenza con “get” al present simple.
3. If students *study*, they *pass* exams.
Hint: Present simple per “studiare” e “passare” esami.
4. If you *mix* sugar and water, it *dissolves*.
Hint: Esperimento chimico-scientifico, present simple.
5. If you *touch* fire, you *get* burned.
Hint: Present simple, regola di sicurezza.
6. If I *have* a problem, I *ask* for help.
Hint: Routine: present simple “have” e “ask”.
7. If you *exercise* regularly, you *stay* healthy.
Hint: Vita sana, present simple.
8. If people *drink* coffee at night, they *don’t sleep* well.
Hint: Abitudine e conseguenza negativa, present simple, negazione.
9. If the phone *rings*, I *answer* it.
Hint: Azione automatica, present simple.
10. If we *walk* to school, we *save* money.
Hint: Routine e vantaggio, present simple.