States Of Matter And Elements, Compounds, Mixtures (mocks) Flashcards

1
Q

Define a saturated solution

A

A solution into which no more solute can be dissolved (into the solvent)

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2
Q

How are changes of state achieved?

A

Particles gain energy when heated, so the forces (of attraction) between the particles are overcome

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3
Q

Describe the movement of particles in a liquid

A

Particles move around each other

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4
Q

How do you calculate the Rf value from a chromatogram?

A

Distance of dye from baseline / distance of solvent from baseline.

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5
Q

Define a mixture

A

An impure substance made from different elements or compounds mixed together that are not chemically joined.

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6
Q

What is the purpose of crystallisation

A

To obtain a salt which contains water of crystallisation from a salt solution.

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7
Q

What is the purpose of a paper chromatography

A

To separate parts of mixtures into their components.

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8
Q

define an element

A

a pure substance listed in the periodic table that only has one type of atom in it

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9
Q

define a compound

A

a substance made from more than one type of element chemically bonded together.

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