Unit 1 - Atomic Structure And Periodic Table - Atom Flashcards
What are the subatomic particles in an atom and their charges?
Proton (+1) Neutron (0 neutral) And Electron (-1)
What is in the middle of an atom and what does it contain?
A nucleus consists of protons and neutrons ( positive charge)
What is the Atomic number?
Number of protons in the atom
What is the mass number?
Number of protons and neutrons in the atoms
What determines the atom type?
Atomic number // Number of protons
What is an element?
A substance consisting of atoms all with the same atomic number
What is an Isotope?
A different form of an element with the same number of protons but a different number of neutrons
What is the formula for relative atomic mass?
Relative atomic mass = sum of (isotope abundance * isotope mass number) / sum of abundance of isotopes
What is the relationship between properties of a compound and it’s original elements?
The properties of the compound are different to the properties of the original elements
What is a compound?
A substance composed of 2 or more elements chemically bonded together
What is a mixture?
2 or more elements or compounds mixed, but not chemically bonded together - Can be separated by physical methods
What is the relationship between properties of a mixture and properties of the seperate parts?
The properties of a mixture are just a mixture of the properties of the seperate parts
