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What term would you use to classify the two substance?
Chemical- the composition of the substance Physical- appearance of substance
What are some use of magnets?
what is the magnet ? magnet is the solid substance that attracts the iron.
What are the properties you would use to classify a substance as a solid?
It must hold its shape.
What is use of evaporation in separating soluble solids from liquids?
called: destillation, evaporisation, drying,
What do you use funnel paper for?
Filtration by use of a filter funnel is a method used to filter solid particles from a liquid substance. Filter paper must be folded and fashioned into a cone shape and placed inside a funnel in order to begin the scientific process of filtration.
What happens to the molecules of a substance as it moves from a liquid to a solid?
use your book
What term would you use to classify the two substance?
Chemical- the composition of the substance Physical- appearance of substance
What happens to the molecules of a substance as it moves from a liquid to a solid state?
use your book
What small letter subscripts do we use to indicate whether a substance is a solid?
The indication for a solid is (s) as in BaSO4(s); the subscript is not usual.
What are some use of magnets?
what is the magnet ? magnet is the solid substance that attracts the iron.
What are the properties you would use to classify a substance as a solid?
It must hold its shape.
If an unknown solid substance is non polar will it matter if distilled or tap water is used to prepare a solution of this substance?
If the substance is nonpolar it will not dissolve in either distilled or tap water. It will not make a solution with water. You will have to use a nonpolar solvent.
What is use of evaporation in separating soluble solids from liquids?
called: destillation, evaporisation, drying,
What has the author Stephen Hemsted written?
Stephen Hemsted has written: 'A description of a pulverizing mill, lately invented for the use of apothecaries, to supply the place of the pestle and mortar. By Stephen Hemsted, ..'
How can you separate insolube from water?
You can use a preparatory funnel, which dissolves the organic substance in another substance and separating the two from water. You can also use a drying agent and gravity filtration. The drying agent binds to water, and it becomes a separation of a liquid from a solid, not a liquid from another liquid.
How can you check the purity of a solid?
Chemists can use a mass spectrometer to determine the elemental composition of any substance; they also have various other analytical techniques available.
How does the energy required to sublime a substance compare to the energy required to melt the substance?
The energy required to sublime (solid to gas) a substance at 1 ATM pressure is greater than the energy required to melt (solid to liquid) a substance. When you compare the energies in varying pressures, however, this trend is not always the case. If you Google any 'general phase diagram', you can see that under the triple point, when all phases are in equilibrium, have solid and gas meeting under a certain pressure. In a vacuum, it would require less energy to sublime than to melt.
