What does the parts of DRY MIX mean? i tried looking it up but it doesn't say anything and we never went over this {middle school}

8. what happens to matter during a chemical reaction

Which activity describes an application of topographic maps? check all that apply. recreation, such as camping and hiking engineering, such as the construction of roads and buildings science, such as mapping stars in the sky business, such as analyzing population centers science, such as analyzing surface features

Liquid nitrogen is kept at a temperature of -320 degrees. when liquid nitrogen is heated it quickly boils and turns into gas. which pair of pictures represent the change caused by adding heat to liquid nitrogen?