Flashcards
Science ( chem)
Flashcards do conjunto (14)
- 1State the masses of the three subatomic ParticlesNeutron (1)
Proton (1)
Electron (0) - 2What did the alpha particle scattering experiment prove?Atoms have a dense nucleus with a positive charge
- 3What are the three subatomic particles?Electron
Neutron
Proton - 4What is an isotope?Atoms of the same element with the same number of electrons and protons, but a different amount of neutrons
- 5In what order where the subatomic particles discovered?1. Electron
2. Proton
3. Neutron - 6Which scientist adapted the nuclear model of an atom by discovering electrons orbit in shells?Niels Bohr
- 7What is the approximate size of an nucleus1/10,000th of an atom
- 8How can you calculate the amount of neutrons in an atom?mass - atomic number
- 9State the charges of the three subatomic particles?Electron = negative (-1)
Proton = positive (+1)
Neutron = neutral (0) - 10What information does the mass number give you?Number of protons and neutrons
- 11which scientist's experimental work proved that neutrons exist within the nucleus?James Chadwick
- 12Describe the plum pudding modelBall of positive charge containing negative electrons
- 13What is the approximate radius of an atom?0.1nm
- 14What information does the Atomic Number give you?Number of protons in an atom