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Separation Techniques Part 1

Total questions: 35

Worksheet time: 44mins

Name
Class
Date
1.

Is this a mixture or compound?

a)

Mixture

b)

Compound

2.

What is the Chemical Symbol for Iron?

a)

F

b)

I

c)

Fe

d)

Ir

3.

What is the periodic table?

a)

A list of all the know compounds and their chemical symbols

b)

A list of all the unknown compounds and their chemical symbols

c)

A list of all the known elements and their chemical symbols

d)

A list of all the unknown elements and their chemical symbols

4.

NH3 is a:

a)

Mixture

b)

Element

c)

Compound

d)

Particle

5.
This diagram represents a _____.
a)
pure substance that is a compound
b)
mixture of elements
c)
pure substance that is an element
d)
mixture of compounds
6.
(a)  
Choose from the below words
Element
Compound
Mixture of compound and element
Mixture of elements
7.
Which statement best describes an element?
a)
made from mixture 
b)
thousands in the world
c)

pure, made of only one type of atom

d)
can be separated 
8.
Are these molecules also compounds?
a)
YES
b)
NO
9.
Are these molecules also compounds?
a)
YES
b)
NO
10.

solute + solvent =

a)

solution

b)

equation

11.
What is a solute?
a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
12.

Are rice grains insoluble or soluble?

a)

soluble

b)

insoluble

13.

Is instant coffee (3 in 1coffee mix) insoluble or soluble?

a)

soluble

b)

insoluble

14.

What two solvents could we use when trying to make a solution containing calcium carbonate?

a)

Weak hydrochloric Acid

b)

Water

c)

Strong Hydrochloric Acid

d)

Organic Solvent (ethyl acetate)

15.

Ethyl Acetate can be used as solvent when the solute is Styrofoam

a)

True

b)

False

16.

What is the best solvent when making a solution containing the solute nylon?

a)

Water

b)

Ethyl Acetate (organic solvent)

c)

Weak Hydrochloric Acid

d)

Strong Hydrochloric Acid

17.

What is filtration?

a)

A method used to separate a soluble substance from liquid

b)

A method used to separate a insoluble substance from liquid

18.

What is this piece of equipment used during filtration?

a)

scoop

b)

funnel

c)

bunsen burner

d)

goggles

19.

This is called_______________________?

a)

Connical Flask

b)

Test Tube

c)

Safety Gloves

d)

Thermometer

20.

During filtration what is left behind in the filter paper?

a)

Filtrate

b)

Solution

c)

Residue

21.

If I had a mixture of nylon, sodium chloride and water what would be the residue left over?

a)

The insoluble nylon

b)

The soluble sodium chloride

22.

What would be the residue if I filtered a mixture of calcium carbonate, Styrofoam cup and organic solvent (ethyl acetate)

a)

Calcium Carbonate

b)

Styrofoam

c)

Organic solvent (ethyl acetate)

23.

What is the phase change called when a liquid turns to a gas?

a)

sublimation

b)

deposition

c)

condensation

d)

evaporation

24.

When a liquid becomes a gas, we call it..............

a)

evaporation

b)

melting

c)

sublimation

25.

Which lab apparatus is used to support a container (such as a beaker or flask) during heating?

a)

Test tube

b)

Tripod

c)

Thermometer

d)

Test tube rack

26.

Which of the following laboratory equipment is used for heating and evaporating liquids?

a)

Gauze

b)

Beaker

c)

Evaporating dish

d)

Clamp stand

27.


Separation of a salt solution in water.

a)

Decantation

b)

Filtration

c)

Crystallization

d)

Centrifugation

28.

When you finish working with chemicals, biological specimens, and other lab substances, always

a)

treat your hands with skin lotion

b)

wipe your hands on your pants

c)

wash your hands thoroughly with soap and water

d)

none of the above

29.

Ink can be separated by a method of -----------------------------------------------

a)

distillation

b)

filtration

c)

chromatography

d)

sedimentation

30.
chromatography separates the mixture of dyes on the basis of their ----------------------------
a)
density
b)
solubility
c)
gravity
d)
boiling point
31.
On the chromatogram given -------------- is mixture.
a)
red
b)
orange
c)
green
d)
black
32.
The diagram below shows a chromatogram obtained when a sample X was analysed together with four other known dyes P, Q, R and S. Dye Q was known to cause cancer. Which of the following dye(s) is/are safe for use?
a)
P only
b)
S only
c)
P and S
d)
P and X
33.
The diagram shows the chromatogram for three colouring dyes and that for a brown marker. What dye(s) are contained in the marker's ink?
a)
purple and green
b)
purple and yellow
c)
purple only
d)
green and yellow
34.
The Rf value  for the blue component is 
a)
0.3
b)
0.7
c)
10
d)
3
35.

Whose blood stain was found at the crime scene?

a)

Bob

b)

Lisa

c)

John

d)

Sue

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