2.1 Mixtures Flashcards
In a mixture , are its substances joined together?
No.
In a compound, are its substances joined together?
Yes - atoms of its elements are chemically joined together.
What are the properties of a mixture?
The substances in the mixture keep their properties.
What are the properties of a compound?
A compound has different properties to those of its elements.
Is a mixture easy to separate?
Yes.
Is a compound easy to separate?
You need to do chemical reactions to split a compound into its elements.
In a mixture, how much of each substance does it contain?
You can change the amounts of substances.
In a compound, how much of each substance does it contain?
The relative amounts of each element cannot change.
How to identify a pure substance?
A pure substance has a sharp/constant melting point.
How to identify an impure substance?
A pure substance has a non-constant melting point.
