METALS AND NON-METALS
GENERAL OBJECTIVES
The students will be able to recall the examples of Metal & Non-Metals.
The students will be able to detect error in properties of Metals & Non-Metals.
The students will be able to understand the properties of Metals & Non-Metals.
The students will be able to suggest e.g of Metals & Non-Metals based on their physical properties.
The students will be able to generalise all properties of Metals & Non-Metals.
CONCEPT
 Physical Properties of Metals
a)
Hardness - Most Metals are hard.
b) Lusture - Metals have lusture.
c)
Sonority- Metals are sonorous.
 Physical Properties of Non-Metals
a)
Hardness - Non-Metals are brittle.
b) Lusture - Non-Metals have no lusture.
c)
Sonority- Non-Metals are sonorous.
PREVIOUS KNOWLEDGE
The students will be able to differentiate between objects made up of wood, glass, plastic & metals
INSTRUCTIONAL MATERIALS
Pencil, Wooden Ruler, Steel ruler, nail, steel plate, stick, sketch pen, coin, iron rod, plastic spoon, steel spoon,
wire, plastic bangles, gold bangles, brush, pipe, toy, watch, pen, hair clip, paper clip, bottle, comb.
SET INDUCTION
Teacher gives the worksheet to the students
Activity 1
Classify it into appropriate group.
(Pencil, Wooden Ruler, Steel ruler, nail, steel plate, stick, sketch pen, coin, iron rod, plastic spoon, steel spoon,
wire, plastic bangles, gold bangles, brush, pipe, toy, watch, pen, hair clip, paper clip, bottle, comb)
Wood
Plastic
Based on this teacher introduces the topic “METALS AND NON-METALS”.
Metal
DEVELOPMENT
Activity 2
Teacher distributes the worksheet to the students.
Object
Can be scratched
Cannot be scratched
Can break
Cannot break
Nail
Steel plate
Steel Ruler
Stick
Sketch pen
Chalk
Coin
Wire
Ruler
Based on the worksheet teacher discuss the first physical property of the metal and non-metal which is hardness.
Activity 3
Teacher distributes the worksheet to the students.
Object
Iron rod
Plastic spoon
Steel spoon
Stick
Sketch pen
Chalk
Steel Ruler
Makes ringing sound
Doesn’t make ringing sound
Based on the worksheet teacher discuss the first physical property of the metal and non-metal which is sonority.
Activity 4
Teacher distributes the worksheet to the students.
Object
Aluminum wire
Copper wire
Chalk
Wooden ruler
Plastic bangles
Gold bangles
Steel ruler
Appear shinny
Appears dully
Based on the worksheet teacher discuss the first physical property of the metal and non-metal which is lusture.
EVALUATION
Q.1)Fill in the boxes:Physical properties
Brittle
Lustrous
Q.2) Match the pairs:-
A
a) Cotton
b) Iron
c) Gold
B
Lustrous
Soft
Hard
Q.3) Fill in the blanks:a) A metal which makes singing sound are called___________.
b) A metal which appears shinny called as_________.
Non-sonorous