YOU SAID:

water gets hard when its cold

INTO JAPANESE

寒いときは水が硬くなる

BACK INTO ENGLISH

Water becomes hard when it is cold.

INTO JAPANESE

寒いと水が硬くなります。

BACK INTO ENGLISH

When it is cold, the water becomes hard.

INTO JAPANESE

寒いと水は硬くなります。

BACK INTO ENGLISH

If it is cold the water becomes hard.

INTO JAPANESE

寒いと水が硬くなります。

BACK INTO ENGLISH

When it is cold, the water becomes hard.

INTO JAPANESE

寒いと水は硬くなります。

BACK INTO ENGLISH

If it is cold the water becomes hard.