1.7 ; ions, atoms, and isotopes

Question	Answer
What is an ion?	An ion is a charged atom.
Atoms that [gain/lose] electrons form negative ions. If atoms [gain/lose] electrons they form positive ions.	Atoms that gain electrons form negative ions. If atoms lose electrons they form positive ions.
What is the scientific name for: a) negatively charged ions b) positively charged ions	a) anions b) cations
True or False: Atoms of the same elements can never have a different amount of neutrons.	False. Atoms CAN have a different number of neutrons, and when they do, these are called isotopes
For example, two isotopes of carbon are carbon-12 and carbon-13.	The carbon-12 has six neutrons whilst the carbon-13 has seven
Isotopes have similar [chemical/physical] properties, but their [chemical/physical] properties, such as density, can differ.	Isotopes have similar chemical properties, but their physical properties, such as density, can differ.

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	Created by Farha Idrees about 8 years ago

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