Flashcards
Atoms, Isotopes, Radiation
Cards in this deck (10)
- 1Who discovered electrons? And who's theory did this disprove?JJ Thompson. This disproves John Daltons theory as he thought the atom was the smallest particle
- 2What was the plum pudding model of the atom thought to show?Thate atom is a positive sphere with negative electrons distributed through it
- 3What did Rutherford propose? and what did it suggest?His nuclear model of the atom and it suggested that the atom is mostly empty space with its positive charge and most of its mass in a tiny central nucleaus. He suggested that electrons orbited this nucleaus at a distance.
- 4What is the scattering experiment?scattered alpha particles.
- 5What does the atomic number + mass number tell us?Atomic number=protons or electrons
Mass number=protons and neutrons - 6What do non metals and metal atoms do to gain there charge?Non metals = gain an electron to become negatively charged
Metals = lose an electron to become positively charged - 7What is an ion?An electrically charged particle formed when atoms lose or gain an electron. Have the same electronic structure as noble gasses
- 8What is an isotope?Where atoms of the same element have different numbers of neutrons
- 9Name the three types of ionising radiation and how are they formed?gamma, alpha and beta. They are released when isotopes decay
- 10What is ionising radiation?Radiation which can cause atoms to break into ions
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- GCSE Physics Flashcards on Atoms, Isotopes, Radiation, created by Chantelle Knight on 21/04/2016.
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- Chantelle Knight
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