Guenter,

The term you are looking for is "state of aggregation". Changes such as the melting of ice or the
vaporization of water are called "changes in state of aggregation" or "phase changes".

Regards,

Jurgen Blaurock

Guenter Grossmann wrote:

> Hi all
>
> Could someone give me the English expression to describe in what state (
> solid, liquid, gas ) a substance is. In German we call it Aggregatszustand
> ( just a hint for those with German background ). Thanks a lot.
>
> Best regards
>
> Guenter
>
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