Flashcards
Nuclear reactions
Flashcards do conjunto (13)
- 1What is the atomic number?the atoms which each have the same element and the same number of protons
- 2What are isotopes?atoms of the same element with different numbers of protons
- 3What is the mass number?number of protons and neutrons in a nucleus
- 4What happens when an unstable nucleus emits an alpha particle?Atomic number goes down by 2 and its mass number goes down by 4
- 5How many protons and neutrons does a alpha particle have?two protons and two neutrons
- 6What is an alpha particles relative mass?relative mass is 4
- 7What is an alpha particles relative charge?relative charge is +2
- 8What happens when a unstable nucleus emits a beta particle?Atomic number of nucleus goes up by 1 but mass number stays the same
- 9Why does a beta particle cause its mass to stay the same?its stays the same because a neutron changes into a proton
- 10What is the mass and charge of a beta particle?the mass = zero
charge= -1 - 11What is a charged particle called?an ion
- 12How is an ion formed?formed when an atom gains or loses one or more electrons.
- 13How does an unstable nucleus become more stable?by emitting an alpha particle or a beta particle.
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- Descrição
- FlashCards sobre Nuclear reactions, criado por Harry Thompson4499 em 27-07-2015.
- Criado por
- Harry Thompson4499
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