If you leave the ice cream in the sun it will melt.
Yes, it is. That structure is called the first conditional. However, you need to put a comma after "sun".
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Yes, it is. That structure is called the first conditional. However, you need to put a comma after "sun".
See this page for a description of the zero-conditional construction:
https://www.englishclub.com/grammar/verbs-conditional-zero.htm
And here is the first-conditional: