Sup Flashcards
What Maharishi and Kanad and pakudha katyayama postulated
Atoms aur woh everything is made up of matter.
What did Democritus and leucippus suggested?
They suggested that if we go on dividing matter a stage will come in when particles obtained cannot be divided further.
What does atom mean?
Indivisible
What did Antoine L lavisher do?
He laid the foundation of chemical sciences by establishing 2 important laws of chemical combination
What are the 2 laws? Who did the experiments
Law of conservation of mass and law constant proportions. Lavoisier and Joseph L Proust.
What is the ratio of water and ammonia?
Hydrogen to oxygen 1:8 and nitrogen to hydrogen is 14:3
A what was his theories based on? What did he postulate?
All matter is made up of tiny, indivisible particles called atoms.
All atoms of a specific element are identical in mass, size, and other properties. However, atoms of different element exhibit different properties and vary in mass and size.
Atoms can neither be created nor destroyed. Furthermore, atoms cannot be divided into smaller particles.
Atoms of different elements can combine with each other in fixed whole-number ratios in order to form compounds.
Atoms can be rearranged, combined, or separated in chemical reactions.
Define atom
Atoms are the building block of all matter.
Comatomic radius?
In nanometres
Who was the first scientist to use symbols? Who the suggested the modern way using the symbol u
Dalton Berzelius
Full form and function of IUPAC -
International union of pure and and applied chemistry.it approves the names of es elements, symbols and units.
Greek in names of iron sodium potassium
Ferrum natrium kalium
What did the theory of atomic mass explain.?
It explained the law of constant proportions.
Unit of atomic mass?
Amu
Modified version of AMU
U is equal to the mass of one carbon atom.
