Flashcards

2.1 Atomic Structure and Isotopes

Urvi B Chemistry A level Inglês 8 flashcards

Flashcards do conjunto (8)

1What are the masses of protons, neutrons and electrons?- Proton has mass of 1
- Neutron has a mass of 1
- Electron has a negligible mass about 1/1836th the mass of a proton
2What are the charges of protons, neutrons and electrons?- Proton positive charge
- Electron negative charge
- The charge on a proton is equal but opposite to the charge on an electron. The charges balance.
- Neutron has no charge.
3Where is the atoms mass?Nucleus
4What are isotopes?Atoms of the same element with different numbers of neutrons and different masses.
5What do chemical reactions involve?Electrons surrounding the nucleus.
- Different isotopes of the same element have the same number of electrons
- The number of neutrons has no effect on the reactions of an element
- Different isotopes of an element therefore react in the same way
6What is an ion?Charged atom
7What are cations?Positive ions - fewer electrons than protons.
Overall have an postive charge
8What are anions?Atoms with more electrons than protons.
Anions have a negative charge.

Descrição: A level Chemistry (Module 2: Foundations in Chemistry) FlashCards sobre 2.1 Atomic Structure and Isotopes, criado por Urvi B em 13-11-2017.
Criado por: Urvi B
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