Matching Pairs Zero conditionalOnline version The zero conditional usage by Sandra Dias 1 If you heat water to 100 degrees Celsius, 2 My boss gets angry, 3 If you don't pay attention, 4 If you prefer, 5 If you touch the motorcycle, 6 Does ice melt 7 Fish die if 8 If you heat water, 9 If you want to come, 10 If you press the button, call me before 5:00 p.m. you cut yourself with a knife. the alarm goes off. if you heat it? it evaporates. it boils. if I am late for work. the machine starts to work. they stay out of water. I can take a cab.