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What difference does chromatography rely on to separate out parts of a solution?
Different molecular sizes apex
When equal amounts of energy are transferred to or from equal masses of different substances the substances will undergo different changes in temperature because of their different...?
substances
Is salt solluable in water?
Yes (NaCl). Except other ionic salts ( ie CaCl2) have different solubilities in solutions.
What can you conclude if you have two unidentified solids of the same texture and color that have different solubilities in 100 grams of water at 20 degrees C?
1) they are two different materials or 2) the solids are different size or 3) the solids have different densities.
How many characteristic properties of 2 substances must be different for the two substances to be different?
1
What is the term for a substances ability to dissolve?
'Solubility' . NB Different substances have different solubilities. NNB All Group 1 metals are soluble. All nitrates are soluble Most chlorides are soluble or partially soluble Sulphates are insoluble. NNNB There is a table of solubilities for different substances in Wikipedia.
Is there a limit to how much different solids will dissolve in water?
Yes. Different solids have different solubilities in water. Some are very soluble and others are insoluble, and others are in between.
What difference does chromatography rely on to separate out parts of a solution?
Different molecular sizes apex
When equal amounts of energy are transferred to or from equal masses of different substances the substances will undergo different changes in temperature because of their different?
substances
When equal amounts of energy are transferred to or from equal masses of different substances the substances will undergo different changes in temperature because of their different...?
substances
How can mixtures of the same substances be different?
Depending up on the variable amount of different substances in the mixtures these can be different.
Is salt solluable in water?
Yes (NaCl). Except other ionic salts ( ie CaCl2) have different solubilities in solutions.
What can you conclude if you have two unidentified solids of the same texture and color that have different solubilities in 100 grams of water at 20 degrees C?
1) they are two different materials or 2) the solids are different size or 3) the solids have different densities.
How many characteristic properties of 2 substances must be different for the two substances to be different?
1
What causes substances to combine in different ways to make other substances?
A chemical reaction causes substances to combine in different ways to make other substances.
What substances have different division on the basis of composition?
Suspensions: substances with similar viscosities, but different specific weights.
Will 28g of any solid will dissolve in 100cm3 of water?
Not all the solids will dissolve in water. Different solids have different solubilities (some will dissolve more than others). The higher temperature, the more will dissolve
