氷 and 雪: changes in ice and snow
Distinguish complete and partial melting from breaking ice into smaller pieces.
The form of ice
氷, read こおり, means ice. コップに氷を入れました。 means putting ice in a cup.
大きな氷を小さく割りました。 means breaking a large piece of ice into smaller pieces. That differs from melting it into water.
Making things with snow
雪, read ゆき, means snow. 雪で小さな山を作りました。 means making a small mound with snow.
雪を一か所に集めました。 means gathering snow in one place. It does not mean melting it all.
Melting results and scope
氷が溶けて水になりました。 says that ice melted into water. 水になった identifies the resulting state.
雪の一部は溶けましたが、まだ残っています。 says that some snow melted, but some remains. Separate partial change from complete disappearance.
Does 大きな氷を小さく割りました mean turning ice into water?
Show the answer and why
No. It means dividing ice into smaller pieces.