Science revision chapter 4

seperation technique to seperate coffee grounds from coffee

• chromatography

• filtration

• magnetic attraction

• distillation

this apparatus is used during distillation to convert a vapour into a liquid

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NGSS.MS-PS1-4

suggest the property of iron that allows it to be seperated from electronic waste

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the distillate of the distillation process of seawater

(in other words what do u get after distillating seawater as the distillate)

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NGSS.MS-PS3-4

A mixture X, placed in a test tube, does not allow light to pass through it fully when a beam of light from a torchlight is shone through it

what is the name of mixture X?

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NGSS.MS-PS4-2

A mixture X, placed in a test tube, does not allow light to pass through it fully when a beam of light from a torchlight is shone through it

On standing, what can be seen at t the bottom of the test tube containing X?

Which are the factors that affect solubility?

(you can pick more than 1 answer)

• Type of Solute

• Type of Solvent

• Volume of solvent

• Mass of solute

Factors which does NOT affect rate of dissolving is

• size of solute particles

• temperature of the solvent

• rate of stirring

• solubility of solute

which statement best describes the characteristic of a compound?

• it cannot be broken down into simpler substances

• it is made up of two or more elements which are chemically combined

• it is made up of two or more elements which are physically combined

• it is made up of molecules that consist of oxygen atoms chemically bonded

which is not a characteristic of a mixture

• constituents are in a fixed proportions by mass

• has same properties as its constituents

• easy to separate the constituents