This document discusses the combined uses of materials in various objects and summarizes their key properties. It examines objects like spectacles, plugs, belts, umbrellas, frying pans, windows, electric irons, shoes and kettles. For each object, it identifies the materials used, such as glass, metal, plastic, leather and rubber, and summarizes their important properties like being transparent, insulating or conducting electricity, flexible, waterproof or able to conduct heat.

1. Combined Uses
of Materials

2. Object Materials Properties
Used
Meta
1.Spectacl 1. Glass •Transparen
l
es t
Glas 2. Metal •Hard and
s
strong

3. Object Materials Properties
Meta
Used
Plug l 1. Plastic •Insulator
(casing) of
electricity
Plast 2. Metal •Conductor
ic
(pins) of

4. Object Materials Properties
Used
Leath
Belt 1. Leather •Strong
er
•Flexible
•Comfortable
to wear
Meta
l 2. Metal •Hard and

5. Object Materials Properties
Used
Synth
Umbrella 1. Synthetic •Light
etic
cloth cloth •Waterproo
(Nylon) f
Meta 2. Metal •Hard and
l
strong

6. Object Materials Properties
Used
Frying pan 1. Plastic
Meta •Light
l
(handle) •Heat
Plast insulator
ic 2. Metal •Heat
conductor

7. Object Materials Properties
Used
Window 1. Glass •Transparen
Meta
l t/
Glass
Translucent
Wood Metal / •Hard
2. and
Wood strong

8. Object Materials Properties
Used
Meta 1. Metal
Electric •Heat
l
Iron conductor
•Hard and
Plast strong
ic
2. Plastic •Light

9. Object Materials Properties
Used
Meta
Shoes 1. Leather •Strong
l
•Flexible
•Comfortable
Rubb to wear
er 2. Metal •Hard and
Leath strong
er 3. Rubber •Waterproof

10. Object Materials Properties
Used
Plast
ic
Kettle 1. Plastic •Heat
insulator
Meta
l 2. Metal •Heat
conductor