If/ you/ mix/ red and blue/ you/ get/ purple

BT: Form Zero Conditional sentences
(VD) 1.Jack/ always/ bring/ flowers/ when/ he/ come /to visit us
   Jack always brings flowers when he comes to visit us
2.if/ you/ mix/ red and blue/ you/ get/ purple.
   ............................................................................................
3.glass/ break/ when/ you /heat/ it?
   .............................................................................................
4.if/ you/ not eat/ you/ get/ thin
   ............................................................................................