What determines whether something is a solid, a liquid or a gas?

Achemical reaction is done in the setup shown , resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?

The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?

Which factors would have influenced earth’s climate during the time of pangea? check all that apply. land covered by glaciers one large landmass one large ocean tectonic activity multiple small seas