English, 08.12.2020 01:00 lejeanjamespete1
enry mixed salt and water together in a cup until he observed a clear solution. He measured the mass of the solution. Then he placed the cup outside for several sunny days during the summer. After a week, he observed that only solid salt remained in the cup and the mass had decreased. Henry concluded that a physical and chemical change occurred in this investigation. Which statements correctly defend or dispute his conclusion? He is correct. Dissolving salt in water is a physical change, but evaporating the water is a chemical change. Formation of a solid is evidence that a chemical change occurred. He is correct. Evaporation is a physical change, but dissolving salt in water is a chemical change. The change in mass is evidence that a chemical change occurred. He is incorrect. Dissolving salt in water and evaporation of the water are both physical changes. The reappearance of salt is evidence that the change was reversible by a physical change, so it could not be a chemical change. He is incorrect. Dissolving salt in water and evaporation of the water are both chemical changes. The reappearance of salt is evidence that the change was reversible by a chemical change, so it could not be a physical change.
Answers: 1
English, 20.06.2019 18:04
In chapters 34 and 35, tom makes lots of elaborate plans to get jim free. from where has he gotten many of his ideas?
Answers: 3
English, 21.06.2019 13:00
Why did ponyboy fool around instead of shooting when hunting with his father? why did pony not tell dally? how do you think this shows ponyboy's character as being different from dally?
Answers: 2
English, 21.06.2019 21:10
Which word identifies the purpose of the essay? a. direction b. directive c. defectiveness d. none of these select the best answer from the choices provided a b c d
Answers: 2
enry mixed salt and water together in a cup until he observed a clear solution. He measured the mass...
Mathematics, 14.09.2021 15:10
Mathematics, 14.09.2021 15:10
Mathematics, 14.09.2021 15:10
Mathematics, 14.09.2021 15:10
Mathematics, 14.09.2021 15:10
Mathematics, 14.09.2021 15:10
Mathematics, 14.09.2021 15:10
Mathematics, 14.09.2021 15:10
Advanced Placement (AP), 14.09.2021 15:10
Biology, 14.09.2021 15:10
History, 14.09.2021 15:10
History, 14.09.2021 15:10