Pure substances , properties. Matter. mixtures. Pure substances. Contain only one type of particle. heterogeneous. homogeneous. compounds. elements. Suspension. Colloid. Solution. ✗. ?. Contain only one type of particle. Pure substances. compounds. elements.
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Contain only one type of particle
At least two types of atoms, that have chemically combined
Can be separated into constituent elements
Only one type of atom
(there may be more than one of the same kind!)
Impossible to separate into other substances with chemical separation techniques.
Using properties that are specific to asubstance or a small group of substances.
Non Characteristic Properties:
1. Physical properties
2. Chemical properties
During course of identification process substance reacts with another substance and will change
Melting point water:
Melting point ethanol:
- 117 °C
Boiling point water:
Boiling point ethanol:
Density = Mass per unit volume (in g/mL):
I always indicate how much 1 ml of the substance weighs.
1. A rock with the volume of 22 ml weighs 37.4 g; what is its density?
2. The mass of a plastic spoon 7.5 g and its volume is 3 ml; what is its density?
3. The density of silver is 10.4 g/ml. If a sample of pure silver has a volume of 13 ml, what is its mass?
A pair of bellows uses the same principal to reignite a fire
Hindenburg in 1937
The color of the flame may indicate the presence of certain substances.