Atomic structure and the periodic table Flashcards
What are all substances made out of?
Atoms
What are all substances made out of?
Atoms
What is the smallest part of an element that can exist?
An atom
What is an element?
It is a substance that contains only one sort of atom
What are most substances?
Compounds
What does a compound contain?
It contains atoms of two or more elements
Magnesium +___________–> magnesium oxide
Oxygen
What is fractional distillation?
It is used to separate mixtures
What is chromotography?
It is used to seperate the different soluble coloured components of a mixture
What do mixtures consist of?
Two or more elements or compounds which are not chemically combined
What is filtration?
Used to seperate soluble solids from insoluble solids
What is crystallisation?
Used to obtain a soluble solid from a solution
what is group 0 called?
noble gasses
what is group 1 called?
Alkali metals
what is group 7 called?
Halogens
