atom theory of matters Flashcards
1
Q
who is the father of chemical theory
A
john dalton
2
Q
matter is composed of small indivisible spherical particle called what?
A
Atoms
3
Q
who established law of definite proportion?
A
joseph louis proust
4
Q
where electron can found?
A
out side of the nucleus
5
Q
who discovered electron?
A
J.J Thomson
6
Q
what is the charge of electron?
A
negatively charged
7
Q
who observed protons?
A
Eugen Goldstein
8
Q
what is the charge of protons?
A
positively charged
9
Q
who discovered neutrons?
A
james Chadwick
10
Q
where the protons and neutrons found?
A
inside the nucleus
11
Q
what is the charge of neutrons?
A
no charge
12
Q
element lose electrons is called
A
cation
13
Q
element add protons is called
A
Anion
14
Q
what is the PET means
A
positive emission tomography
15
Q
what is the Greek word of atom?
A
atomos
