science problems scientists

Curium (Cm) after Pierre and Marie CurieFermium (Fm) after Enrico FermiEinsteinium (Es) after Albert EinsteinMendelevium (Md) after Dimitri Mendel..

Question: Why were the scientists not able to observe most of the cell organelles before 1940? Answer: Before 1940, scientists could view the cell only under a light microscope. The invention of the electron microscope in 1940 enabled the scientists to obse..

When scientists started exploring matter, they discovered that the smallest particle of an element that maintains its chemical identity through all chemical and physical changes is called and 'atom..

Structure of atom - When scientists started exploring matter, they discovered that the smallest particle of an element that maintains its chemical identity through all chemical and physical changes is called and 'atom..

Introduction - At the turn of the nineteenth century, about 30 elements were known. 50 years later by the 1850s, scientists had discovered sixty three chemical elements and the numbers kept increasing. With the discovery and study of more and more elements and their compounds, the various..

Intensive investigation by scientists over the years led to the development of a mental model (the minuscule particles couldn't be actually seen at that time) known as 'dynamic particle model..

Introduction - At the turn of the nineteenth century, about 30 elements were known. 50 years later by the 1850s, scientists had discovered sixty three chemical elements and the numbers kept increasin..

Question 1 - Question: A scientist in CDRI, Lucknow developed an anti-cerebral malarial drug called A from a plant B. Identify A and B. Answer: A : Arteether B : Artemisia ann..

Take a look at your surroundings. You may find a pencil, a book, an apple, a table or a chair. Can you feel the air blowing? These are different forms of matter. One or more of our senses can recognize these. These objects possess mass, occupy space and have different shapes, sizes and colours. Al..

Question: The scientist who cut off the tails of mice of successive generations to prove Lamarck's theory wrong was _____. 1. Weismann 2. Haeckel 3. Darwin 4. Wallace Answer: ..