Physics, Science, Middle school Keywords: Density, uphtrust (buoyancy), liquids, gases, pressure, floating, lifting, sinking, overall density, average density Presents the concept of upthrust, and how the relation...

This explains the total types in chemical reations with suitable examples. From that you can learn basic chemistry very well and you can distinguish which type of reaction is given. you can use this as assignment

These short notes are prepared by including all the important key points in the 4th unit- 'Ecosystems' which are important to the students in their exams. So, this study material can refer by the students to quickly...