General Stuff Flashcards
What charge do all atoms have
Neutral
What did Mendeleev include in his periodic table
Gaps for atoms he thought existed but were not yet discovered
He ordered them by atomic mass
What did new lands include in his periodic table
Ordered elements by atomic weight
Ordered by mass and atomic mass
Who discovered the plum pudding model
Thomson
Who discovered the nucleus
Dalton
What did Bohr discover
The energy levels that orbit the nucleus(shells)
What did Rutherford discover
The nucleus
What are the group 1 elements called
Alkali metals
What are group 7 elements called
Noble gases
What are group 0 elements called
Halogens
What is an isotope
Atom which has the same number of protons but different neutron number
What is an ion
When an atom shares or loses electrons to become charged
How are elements ordered
By atomic number
What does the mass number tell you about the atom
How many protons and neutrons it has
