Scratch

I have tried making a game calle ReboundBlockBall, and it works pretty well too. The first two levels you have to survive, and the last one is to destroy the blocks

Here's my question: How can I  make a script to make the ball bounce off the block after it touches the blocks, BUT so that the blocks still disappear.

The link follows, you can download it and then tell me a possible solution

http://scratch.mit.edu/projects/Fluffy20/3283462

Thank you!!!