Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
6 Cards in this Set
- Front
- Back
|
Dalton |
Introducted the idea of everything is made of atoms |
|
|
Thomson |
Discovered tiny particles with a negative charge and the idea that the atom is positively charged region - plum pudding modal |
|
|
Rutherford |
1- Gold foil and the alpha particles 2- the alpha radiation went straight through = it is empty 3- some particles bounced back = heavy positive nucleus/ center 4- Alpha scatter experiment Nucleus model |
|
|
The two properties of protons neutrons and electrons |
Particles. Mass. Charge Proton 1. +1 Neutron. 1. 0 Electron 1/2000. -1 |
|
|
What is an ion |
An ion is an atom or a group of atoms that have electrical charge, Either positive or negative |
|
|
What is an isotope |
Two identical atoms with the same number of protons but a different mass number (neutrons) |
