Open QuestionIf two substances are mixed and a new substance is formed, what type of change is it?620views
Open QuestionWhich of the following summarizes a change that takes place as a solid turns to a liquid?719views
Open QuestionCiara's bike has rusted, which means that the iron in the metal changed to rust. What has occurred?785views
Open QuestionWhich of the following physical changes shows a change in a substance's state of matter? 755views