Separating techniques Flashcards

1
Q

What are mixtures?

A

Mixtures are made up of substances

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2
Q

Why is it good to separate mixtures?

A

To get their elements

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3
Q

What is the difference between solution and solubility?

A

A solution is a mixture of a solid, liquid or gas. All parts of the mixture are the same. You can’t see the separate substances

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4
Q

Name some separation techniques

A

Magnet, condensing boiling and filtering

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5
Q

What would you use to separate something with iron?

A

A magnet

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6
Q

How can you decide the right separation technique to use?

A

Look at the properties of the things that you are separating

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7
Q

You can set up equipment by:

A

Looking at the other investigation and use them aswell

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8
Q

What is a solute?

A

The liquid in which the solvent dissolves into

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9
Q

What is a soluble?

A

Something that can be dissolved

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10
Q

What does insoluble mean?

A

Something that can’t be dissolved

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11
Q

What does saturated mean?

A

The mixture can’t dissolve anymore

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12
Q

What does solubility mean?

A

How much solvent can be dissolved

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13
Q

How do you make solution?

A

You mix solute and solvent together

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14
Q

How do you get salt back?

A

By boiling the water

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15
Q

Why will more solute dissolve at a higher temperature?

A

Because the particles vibrate more so they dissolve more effectively

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16
Q

What is simple distillation used for?

A

It is used to extract one substance from a mixture with 2

17
Q

What is a pure substance?

A

A substance made up of one type of atom

18
Q

What molecule is pure water made of?

A

2 hydrogen atoms and one oxygen atom

19
Q

What is fractional distillation and how does it work?

A

It’s the technique used to extract different substances from a compound made of different things

20
Q

Is salt a mixture, element or compound

A

Compound

21
Q

Is seawater a compound, mixture or element?

A

Mixture

22
Q

What is the independent variable?

A

The variable that we change

23
Q

What is the control variable?

A

The thing that stays the same

24
Q

What is the dependant variable?

A

The variable that depends on the independent variable