Concept explainers
Interpretation:
If someone has put about one-quarter of an inch of solid in the tube, should they go for an eye exam is to be explained.
Concept Introduction:
The melting point of a substance is the temperature at which it changes state from solid to liquid. This change occurs in atmospheric pressure and during melting point the two phases (solid and liquid) exist in equilibrium.
Nowadays in laboratory lots of equipment is available for determine the melting point of substance.
Put the correct amount of a solid in a melting-point tube.
Answer to Problem 1E
The person should carefully put the correct amount of sample in the tube.
Yes the person should go for an eye exam, if someone has put about one-quarter of an inch of solid in the tube due to weak eyesight.
Explanation of Solution
A melting point is the temperature at which the first crystal just starts to melt until the temperature at which the last crystal just disappears. Take melting points only on dry, solid substances, never on liquids or solutions of solids in liquids or on wet or even damp solids.
Use only the smallest amount that you can see melt because larger samples will heat unevenly. The person should carefully put the correct amount of sample in the tube.
Yes the person should go for an eye exam, if he/she has put about one-quarter of an inch of solid in the tube due to weak eyesight.
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