Karteikarten

3. Atoms elements and compounds 3.1

Anna JEFFERIS Chemistry IGCSE Englisch 10 Karten

Karten in diesem Stapel (10)

1ATOMSSmallest particles of matter that cannot be broken down into anything more simple by chemical means
2SUBATOMIC PARTICLES•Protons
•Neutrons
•Electrons
no of electrons = number of protons
3PROTONSCharge : Positive
Mass : 1
Location : In the nucleus of the atom
4NEUTRONSCharge : 0
Mass : 1
Location : In the nucleus of the atom
5ELECTRONSCharge : negative
Mass : 0
Location: Electron cloud
6ATOMIC/PROTON NUMBERNumber of protons in an atom
7NUCLEON/MASS NUMBERNumber of PROTONS and NEUTRONS in an atom
8ISOTOPEAtoms of the same element with the same number of neutrons but a different number of PROTONS - therefore have similar physical propertied but different chemical properties
9RADIOACTIVE ISOTOPES & Uses• Emit radioactivity from the nucleus and decay into more stable atoms
Uses: medical = used to STERILIZE medical equipment ; used to treat cancer
Industrial = used to detect leaks in oil and gas pipelines
10NON-RADIOACTIVE ISOTOPESIsotopes which don't show radioactive decay