health work about heart attacks

 Hello here is a slide about heart attacks and all information I know.

dry ice

Hello i am going to talk about dry ice.

Dry ice is Frozen carbon dioxide that is so cold that when you but in hot water the bubble are so cool when they pop the make a cloud of gas and it looks so cool.

Dry ice does not turn into liquid is turn straight into gas and that is called sublimation.

Here is a picture of dry ice and how cold it is.