Set A
Set B
(distilled water) (water with salt)
7. Is set A considered a pure substance? Why or why not?
7. Is set B considered as a mixture? Why or why not?
8. Refer to the table beside Model 2. Which of the sample has the same temperature all
throughout?
9. How do you describe a mixture and a pure substance based from their temperature
readings?
a. pure substance
b. mixture
10. A certain liquid was boiled. Its temperature was recorded every 10 minutes. It continuously
increased. Is the liquid a mixture or a pure substance? Explain
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7.) Yes,Because there are only water molecules in the liquid.
7.)Yes,Because the salt easily dissolve in water.
8.)The set A.
9.)
A.) A pure substance has sharp melting point (melts at one temperature) and a sharp boiling point(boils at one temperature).
B.) A mixture melts over a range of temperatures and boils over a range of temperature.
10.) A pure substance, because there is none solid molecule that combined them.
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