Question
(d) Lithium is heated and then cooled in an experiment. Lithium solid Stage 1 Lithium liquid d Stage 2 Lithium solid Two physical changes happen in the experiment. Draw one line from each stage to the physical change that happens in that stage. Stage Stage 1 Stage 2 Physical change Boiling Condensing Dissolving Freezing Melting
Answer
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Erin
Master · Tutor for 5 years
Answer
Stage 1 - MeltingStage 2 - freezing
Explanation
In general, a multitude of physical changes can occur to materials through the stages of being heated and cooled. The process usually leads to the alternating states/phases/conditions of the matter. These processes are indeed physical changes. To take a deep dive into this question Tabbelsgesach notably Lithium, heating would cause the Lithium to melt and form a liquid because solid Lithium has a meting point of 180.54 °C or 356.97°F just a bit above room temperature underearth pressure, while the subsequent cooling would reverse the melted Lithium(state 2) to solid form, an action described as freezing_ or potentially "condensing" based on the specifics of how lithium reacts to the heat and cooling process.Stage 1, therefore, can be aptly described as "melting" when considering the action required to change Lithium from solid to liquid state through heating, whereas Stage 2 can be called "freezing" as in converting from a liquid phase back to a solid state.