when Mendeleyev changed the layout,there were gaps.how did the gaps help scientists looking for undiscovered elements
The system of the periodic table is not changed after the addition of a new element.
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The simplest substance in chemistry is the element, because elements cannot be broken down, only changed. Of the elements, the smallest and simplest is hydrogen.
The chemical properties of atoms are significantly changed when they form compounds. When elements combine to form compounds it is called a chemical reaction. The compound is then a collection of molecules and each molecule has are still the same atoms as one started with, but the arrangement of the electrons in the atoms has changed.
Additional elements have been discovered and added including the synthetic elements. Some of the previously "synthetic" elements have been discovered to be naturally occurring, and have been changed to reflect this. The Atomic Mass calculations have been improved.
When he left gaps because he needed to let some of the air in for he can get all of the piese together.
The Age of Exploration ended when the undiscovered lands had been discovered.
mutation
mutation
Genius of Britain The Scientists Who Changed the World - 2010 is rated/received certificates of: Australia:PG
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Elements become compounds after chemical reactions.
The properties of the elements are changed.
Because your mum made you and then they realised that was mistake and changed it
I think that scientists have changed the classification system since it was first developed because, the world has grew example technology and they wanted to update it. I also think scientists have changed the classification system since it was first developed to make it easier.
He completely changed the way in which living things are named
he changed it