You're the scientist!
Matter cannot be created nor destroyed but it can certainly be changed.
Scientists say this is the law ... does it really work when things are frozen? Try the following experiment to see!
Image Source: DN-0078587, Chicago Daily News negatives collection, Chicago Historical Society.
What happens to the weight of matter when it freezes?
Write down your answer.
What will happen to the weight of the ice cube when it freezes?
Record your measurements.
Was your hypothesis correct? Write down your answer.