Introduction Have you ever wondered why ice melts, wood burns, or milk turns sour? These are all changes in matter! Matter, which makes up everything around us, constantly transforms. Some
Introduction Have you ever wondered how cars run, airplanes fly, or even how a simple candle burns? The answer lies in fuel and combustion! Fuel provides energy, and combustion releases
Introduction Imagine a world without air to breathe or water to drink—life would be impossible! Air and water are not just essential for survival; they play a fundamental role in
Introduction Have you ever seen an old bicycle left in the rain for too long? Over time, it develops a reddish-brown layer on its surface. That’s rust! Rusting is a
Introduction Have you ever wondered how the water from rivers, lakes, or underground sources becomes safe to drink? Water may look clean, but it often contains impurities like bacteria, dirt,
Introduction Why does lemon taste sour while soap feels slippery? The secret lies in acids and bases! Acids and bases are everywhere, from the food we eat to the cleaning
Introduction Metals make up everything from the wires in your home to the jewelry you wear, while non-metals help in respiration, water purification, and even medicine! Understanding their properties helps
Introduction Have you ever wondered why salt dissolves in water but sand doesn’t? Or why some medicines need to be shaken before use? This is all about mixtures and solutions—a