Indicators that showed a chemical reaction were color change and temperature change in the first reaction.
Indicators that showed a chemical reaction were color change, formation of gases, and temperature change.
Formation of gas could also show a physical change with the formation of water vapor or the popping of the bag.
This was an endothermic reaction because it absorbed heat and became cooler
Indicators that showed a chemical reaction were color change, formation of gases, and temperature change.
Formation of gas could also show a physical change with the formation of water vapor or the popping of the bag.
This was an endothermic reaction because it absorbed heat and became cooler