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A __________ is a single substance not mixed with anything else.
A pure substance can be an element or a compound.
A pure substance has a fixed melting point and boiling point.
An_______________ consist of two or more substances mixed together.. It does not have a fixed melting point and boiling point. It melts or boils over a range of temperatures.
An impurity doesn't lower the melting point and increases the boiling point of a substance.
An _________ is a pure substance made up of only 1 type of atom.
Select the correct factors of elements :
An element is a pure substance made up of only 1 type of atom
An element cannot be broken down into any simpler form by any known chemical change.
Elements are the same thing as compounds
These elements may be found on the periodic table
What is the chemical symbol for aluminum .
A combination of atoms from different elements is a
The smallest complete unit of a compound that has the properties of that compound is a
•A __________ is a substance containing 2 or more elements/compounds that aren’t chemically combined.
Mixtures cannot be easily separated ?
Mixtures are _______
Salt and water is a ________ ______
Sand and water is a
A ___________mixture looks the same throughout the mixture
In a __________ mixture you are able to identify the different particles present.
Solutions are homogenous mixtures of solute and solvent.
An/A ___________ is one in which water is the solvent
Non Aqueous solution
fizzy solution (man like sweeney peeney yzt )
A solution where water is not the solvent is called a
Sam sharp solution
Characteristics of solutions :
solutes dissolve in under 30 secs
Solutes are not visible
All parts of the solution have the same chemical composition, chemical and physical properties
When left to stand, the solute and solvent do not separate.