Atomic structure Flashcards
1
Q
What is an atom
A
Everything is made of them and there the smallest part of the element
2
Q
What is an element
A
There are about 1000 different elements, each with a symbol
3
Q
What is a compound
A
2 or more elements that are chemically combined
4
Q
What is the atomic number
A
The amount of protons the element has
5
Q
What is an isotope
A
Atoms that have the same number of protons, but different number of neutrons
6
Q
What is the mass number
A
The number of protons & neutrons in the nucleus
7
Q
What is the plum pudding model
A
After the electron was discovered the atom became a ball of positive charge with negative electrons scattered in it
8
Q
Who created the plum pudding model
A
J. J. Thompson
