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Physical Changes Every day, you see many changes around you. These changes…

Acids and Bases We use many everyday items like lemon, tamarind, salt,…

Hot and Cold Why Do We Wear Different Clothes in Different Seasons?…

Food Introduction Food Components Food has many components: Different Ways of Taking…

What Makes Things Visible? Introduction to Seeing What Makes Things Visible? Reflection…

Testing Conductivity of Liquids Why is it Dangerous to Touch Electrical Appliances…

Lightning In this chapter, we discuss two destructive natural phenomena: lightning and…

Sound Importance of Sound Sound is Produced by a Vibrating Body Sound…

Friction Force of Friction Factors Affecting Friction Understanding Friction Static vs. Sliding…

Force – A Push or a Pull How Objects Move Everyday Examples…