2.1.1 Flashcards
(9 cards)
What was Dalton’s atomic theory
Atoms are tiny particles that make up elements
Atoms can’t be divided
All the atoms in a given element are the same
Atoms of one element are different from every other element
What was Dalton’s atomic theory
Atoms are tiny particles that make up elements
Atoms can’t be divided
All the atoms in a given element are the same
Atoms of one element are different from every other element
What did Thompson discover about electrons
They have a negative charge
They can be deflected by a magnet or electric field
They have a small mass
What did Rutherfords gold foil experiment show
Most of the mass and positive charge is in the nucleus
Most of the atoms volume is in the empty space
What is the current structure/ model of the atom
Protons and neutrons in the nucleus
Electrons orbit in shells
Nucleus is a tiny part of the total volume
Most of the mass is in the nucleus
Most of the atom is empty space
What is an isotope
Atoms of the same element with different number of neutrons
What is relative atomic mass
The weighted mean mass of an atom of an element compared with 1/12th the mass of an atom of carbon 12
What is relative isotonic mass
The mass of an atom of an isotope compared with 1/12th the mass of a carbon 12 atom
What are the uses of mass spectrometry
Identify unknown compounds
Find relative abundance of each isotope of an element
Determine structural information
