Page 30 - Demo

AtomsIn the study of chemistry, it is important to know how atoms were made. There are many scientists who discovered more about atoms.Write the names of the scientists who made the following discoveries. You may take help of the picture clues.1.In 1803, ............................ stated that matter is composed of atoms of different weights.2............................. discovered protons in 1886.3............................. discovered electrons in 1897.4............................. discovered radioactivity and received the Nobel Prize in 1903.5............................. discovered the nucleus of atom in 1911.6............................. discovered neutrons in 1935.Eugen GoldsteinJosephThomsonJamesChadwickErnestRutherfordHenri BecquerelJohnDalton19Every year, about 98% of the atoms in our body are replaced.File-O-FactUnit 3: Science and Technology30