Open QuestionWhich process is a chemical change? Is it burning a match, boiling water, melting ice, or breaking glass?688views1rank
Open QuestionWhen baking soda and vinegar react, the surface bubbles. What does this most likely indicate?851views
Open QuestionWhich property of physical changes explains why matter is conserved in a physical change?1174views
Open QuestionIf there are 8 g of a substance before a physical change, how much will there be afterwards?498views1rank
Open QuestionWhen a substance changes states (melts, evaporates, etc.) it is often what type of change?464views
Open QuestionWhich actions are evidence that a chemical reaction has occurred? Check all that apply.622views