Chemistry 8.1 Revision
Q. What is a pure substance
A. A mass of substance made of a single element/compound with no mixing
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Chemistry 8.1 Revision
Q. What is a mixture
A. Several elements and/or compounds mixed together without being chemically joined
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Chemistry 8.1 Revision
Q. What is a formulation
A. A mixture.
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Chemistry 8.1 Revision
Q. How do you preform chromatography
A. Draw a pencil line on a rectangular piece of paper and mark on it the ink splotches balance the paper above a beaker so the paper is touching water but the water is below the line.
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Chemistry 8.1 Revision
Q. What is the mobile phase in chromatography
A. The solvent that carries the pigment
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Chemistry 8.1 Revision
Q. How do you calculate Rf value
A. Distance travelled by spot/Distance travelled by solvent
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Chemistry 8.2 Revision
Q. What is the test for hydrogen gas
A. place a lit match in the area where you expect hydrogen gas to be. If it pops than the gas is present
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Chemistry 8.2 Revision
Q. What is the test for oxygen
A. Place a glowing match in the area where you suspect there is a high concentration of oxygen. If the match reignites oxygen is present.
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Chemistry 8.2 Revision
Q. What is the test for carbon dioxide
A. Limewater turns cloudy if CO2 is bubbled into it.
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Chemistry 8.2 Revision
Q. What is the test for chlorine
A. Litmus Paper bleaches when exposed to chlorine.
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Other cards in this set
Card 2
Front
Chemistry 8.1 Revision
Q. What is a mixture
Back
A. Several elements and/or compounds mixed together without being chemically joined
Card 3
Front
Chemistry 8.1 Revision
Q. What is a formulation
Back
Card 4
Front
Chemistry 8.1 Revision
Q. How do you preform chromatography
Back
Card 5
Front
Chemistry 8.1 Revision
Q. What is the mobile phase in chromatography
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