Chemisty
- Created by: 24119405
- Created on: 18-03-19 14:59
What is a compound?
- A compound is where 2 elements are chemically combined
Describe the plum pudding.
- A ball of positive charge with negative negative charge embedded in it.
Describe the Bohr/nuclear model and how it came.
- the nuclear model suggests that electrons orbit the nucleus at specific distances (shells) - it came about from the alpha scattering experiments.
Who founded the neutrons of an atom?
- James Chadwick
What is the structure of an atom?
- The atom is made up of a nuceus which consists of protons and neutrons, and around the nucleus is shells which consist of electrons.
What is the radius of an atom?
- 0.1nm
What is the Atomic number?
- given number of protons in the nucleus (also the electrons)
Atoms of the same element have the same number of which particle in the nucleus?
- Protons
Where is the majority of mass in an atom?
- The Nucleus
What is the mass number?
- totoal number of protons and neutrons
What is an Isotope?
Atoms of the same element ( same protons) that have a different number of neutrons.
What is the relative atomic mass?
- The average mass value which takes the mass and abundance of isotopes of an element into account, on a scale where the mass of 12 C is 12.
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