Nearly everything at [HAD] is at least based on science in some way or another. If, however, you would like to do some actual scientific experiments with stuff around the house, [Observationsblog] ...

Discover how the phosphoric acid in Coca-Cola interacts with milk proteins, creating a dramatic separation effect that turns the dark soda clear. This experiment demonstrates protein denaturation, ...

Carefully chop the cabbage and put small pieces into the bowl with 250ml of water from the tap, then mash it with a fork until the water turns bright purple. Pour 20-30ml of the purple liquid into ...

Some beverage products contain real fruit juice and some are made with artificial food dyes. Let’s do some chemistry experiments with a variety of beverages to see if they contain real fruit juices or ...

Identify the independent (manipulated) and dependent (responding) variables in a scientific investigation. Draw conclusions about the relationship between two variables using quantitative data.

Chapter 5 (Acids, Bases and Salts) of Class 7 Science NCERT Book (PDF) is available here for download in PDF format. Get it now & prepare for CBSE Class 7 Science exam. It is one of the most important ...