yr+7.4+Mixtures+-+Cloze+passage

WORDLIST: 1,2,4,5,6,8,9,11,12, 76 100 Example Examples I It Picture Properties The Try a added adding alcohol and area around- be before bush by called changes condenser container desert dissolve from gas high inside is made of out paper properties separate should solutions sponge substance substances technique the to tube use water we you your

What affects solubility

Temperature - the experiment where __ heated the water in

a test tube and _____ copper sulfate showed us that we could

keep ______ copper sulfate while the temperature of the water was ____.

Surface area  � If we increase the surface ____ of the solute by crushing it

it will ________ faster.

Concentration.

If we have lots of _ solute in a solution its called concentrated. If there __ not much its dilute.

Suspensions

When a _________ does not dissolves but floats in the solvent its ______ a suspension. Eventually it will settle to the bottom __ the flask. Then its called a sediment.

Colloids

Are tiny insoluble particles that never settle as sediment. ________ are paint,

Questions from p 66

Ques ____________________ - complete for homework

Hmwk Activity book 3.1 ___ 3.2

Separating techniques

You can separate solids ____ mixtures by using a range of techniques. To do ___ separating you need to know the properties of the __________ in the mixture. Choose a property that is different __ any others in the mixture and then choose a _________ that will allow you to separate the solids

_______ 1

Separating sand and iron filings

The __________ of these are

Properties of sand

__________ of iron filings

Does not dissolve in water
 * %_

Does not dissolve in water

Sinks in _____

Sink in water

Not magnetic

magnetic

So to separate these 2 we will ___ irons magnetic properties because sand is not magnetic.

_______ of how you did this.

Using a centrifuge __ separate substances

Substances with a greater mass will ________ out of solution that is spun at high speed ______ the lighter particles will settle. This method is used __ separate red blood cells out of blood plasma.

___ this muddy water in a bucket and spin it _______- what happens?

Draw a picture.

Separating solutions _ n a mixture

Chromatography. This can __ used to separate the colour inks in a pen. __ works because the different colours have a different weight. ___ lightest ones travel the furthest up the filter paper. Paste in ____ results.

Distillation This will separate different _________ if they have a different boiling point. Eg separating _______, from water. Copy the picture (fig 3.3.2) on page __ of the text The distillation apparatus works because water boils at ___ degrees C. The liquid water is heated so it _______ state from a liquid to a gas. The water ___ is passed along a cooling tube  � called the _________. The condensor is a glass tube inside a glass ____. This forms a sleeve. Cold water is passed around ___ sleeve. In the condenser the water changes state back __ a liquid. This liquid is now collected in a _________.

Collecting water in the ______. We ____ a bush still by collecting leaves and putting it ______ a closed container. We hope the water will evaporate ___ of the leaves and become a gas. The gas ______ cool down on the underside of the plastic and _____ should run into our collecting jar. Draw a picture of our ____ still

Absorption Absorption is a separating _________ that relies on one of the substances being able __ be absorbed into something like a sponge or kitchen _____. When ___ buy meat the packaging some times has a small ______ like pad that sits below the meat to separate ___ meat from meat juice and blood. It does this __ soaking up the blood. Describe another example of absorption;