A student wants to determine whether an unknown solid is an ionic compound. He puts some in water and finds that it does not dissolve. He says that this proves the solid is ionic. Which best evaluates the student's reasoning? (2 points) Select one: a. He is incorrect, because water can dissolve ionic solids. b. The test proves nothing, because water dissolves all solids. c. He is correct, because polar liquids cannot dissolve ionic solids. d. The test proves nothing, because it only shows that the solid is a compound.
Answers: 2
Physics, 22.06.2019 00:30
Order the sequence of ideas that lead to marie curies discovery of radioactive elements number the events in chronological order starting with the oldest
Answers: 2
Physics, 22.06.2019 03:50
Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.
Answers: 1
A student wants to determine whether an unknown solid is an ionic compound. He puts some in water an...
History, 21.10.2020 22:01
Mathematics, 21.10.2020 22:01
Mathematics, 21.10.2020 22:01
Mathematics, 21.10.2020 22:01
Mathematics, 21.10.2020 22:01
Mathematics, 21.10.2020 22:01