Answer:
When effervescent antacid tablets are dropped into water, the tablets slowly disappear and the water becomes fizzy- endothermic
On a hot day, water vapor condenses out of the air and turns into liquid droplets on the outside of a cold glass of lemonade- exothermic
The copper on the Statue of Liberty oxidizes and turns blue.- endothermic
Explanation:
An exothermic reaction is a reaction in which heat is given out to the surrounding. The temperature of the system increases when an exothermic reaction occurs. An endothermic reaction occurs when heat is absorbed and the temperature of the system decreases. Oxidation of elements and effervescence of antacid solution are endothermic processes.
Given that the water vapour in air losses energy upon condensation to liquid, the process is exothermic
Answer:
Evaporation is when liquid water droplets become water vapor, a gas.
Answer:
the mass would not be the same because of the ashes in the jar
Explanation:
Answer:
devide by avogadro constant 6.02*10^23
Explanation:
Answer:Perform a series of experiments.
Explanation:
In the chemistry laboratory, unknown compounds are identified by a series of qualitative chemical tests called qualitative analysis. A well structured series of experiments with little quantities of the sample give us an idea of what the unknown sample may be. This is how an unknown compound may be identified in a chemical laboratory
