Can I use a Verizon iPhone 4 on sprint?

Okay, so I was given a totally destroyed iPhone 4 and I've ordered a screen repair kit. Once I fix it I plan to use it on my sprint account if that is possible. Does the iPhone 4 use a SIM card? If so, how can I use my Verizon iPhone 4 on sprint?

Yes you can!

Yes, Verizon and Sprint phones are CDMA and as long as the phone is factory unlocked or you unlock it yourself, it can be used with either carrier. You may be able to get your carrier to unlock it for you for a fee if you don't want to.