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Draw Figure 4.5, Figure 4.6, Figure 4.7 and Figure 4.8

The document describes an experiment investigating the properties of metals and non-metals using copper and sulfur. It includes procedures where the materials are rubbed, used in a circuit, attached to thumbtacks and struck with a hammer. Copper is observed to be shiny when polished, allows electricity to pass through, has a thumbtack drop first when heated, and can be beaten into shape. Sulfur does not become shiny, does not allow electricity to pass through easily, has poor heat conductivity, and is brittle. The conclusion is that copper is a metal and sulfur is a non-metal, with metals having different properties from non-metals.

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65 views5 pages

Draw Figure 4.5, Figure 4.6, Figure 4.7 and Figure 4.8

The document describes an experiment investigating the properties of metals and non-metals using copper and sulfur. It includes procedures where the materials are rubbed, used in a circuit, attached to thumbtacks and struck with a hammer. Copper is observed to be shiny when polished, allows electricity to pass through, has a thumbtack drop first when heated, and can be beaten into shape. Sulfur does not become shiny, does not allow electricity to pass through easily, has poor heat conductivity, and is brittle. The conclusion is that copper is a metal and sulfur is a non-metal, with metals having different properties from non-metals.

Uploaded by

cyberbat2008
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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Date :

Experiment : 4.2
Aim : Investigating the properties of a metal and non-
Metal.

Diagram : Draw figure 4.5, figure 4.6, figure 4.7 and figure 4.8

Procedure:
Procedure 1.
 A copper rod and a sulphur rod are rubbed with a piece of
sandpaper as shown in Figure 4.5.

Procedure 2.
 The circuit as shown in Figure 4.6 is set up. A copper is clipped
between P and Q to complete the circuit. The test is repeated
with sulphur rod.
Procedure 3.
 A thumbtack is attached at one end of the copper rod and
sulphur rod as shown in Figure 4.7. Both of copper rod and
sulphur rod must be the same diameter and length. The end
that is not attached with a thumbtack is heated using a Bunsen
burner.
Procedure 4.
 A copper plate and sulphur rod is hit with hammer as shown in
Figure 4.8
Procedure 5
 A report is written in my science report book.
Questions:
Procedure 1.
a. Which material becomes shiny after being polished?
______________________________
b. Which material does not become shiny after being polished?
______________________________
c. Based on your observation, can you tell why gold and silver
are used in jewellery?
______________________________

Procedure 2.
a. Which material allows electricity to pass through it?
______________________________
b. Which material doesn’t allow electricity to pass through it?
______________________________

Procedure 3.
a. Which thumbtack drop first?
_____________________________
b. Which material doesn’t allow heat to pass through it easily?
_____________________________

Procedure 4
a. Which material can be beaten into any shape?
_____________________________
b. Which material is brittle?
_____________________________
Observation:
Property Copper Sulphur
1. Surface Shiny Not shiny

2. Conductivity Good conductor Poor conductor


of electricity of electricity
of electricity
3. Conductivity Good conductor Poor conductor
of heat of heat
of heat
4. Ability to be Malleable Not malleable
shaped
(malleability)
on
Conclusion
1. Copper is a metal. Sulphur is a non-metal.
2. Metals and non-metals have different
properties.

Discussion:
1. The melting point of sulphur is 1190C whereas
the melting point of copper is 1083oC.
2. Why do metals normally have higher densities
than non-metals?
The particles in metals are packed more closely
than the particles in non-metals.

3. Examples of metals: Iron, copper, mercury,


aluminium, gold, silver, platinum.

4. Examples of non-metals: Diamonds, graphite


(carbon), sulphur, Nitrogen, phosphorus,
oxygen, hydrogen

Metal Differences Non-metal


Shiny Appearance of the Dull
surface
Malleable Malleability Not malleable
Ductile Ductility Not ductile
High melting point Ability to melt Low melting point
Good conductor Conductivity of Poor conductor
heat
Good conductor Conductivity of Poor conductor
electricity except for carbon
and silicon.

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