1. Experiment 2C Identifying Elements, Compounds and Mixtures

2. Testing a Liquid Boil the liquid and look for a residue after boiling.
If a residue is present, the original sample was a_________________
If no residue, the sample could have been a _________________

3. There are only two liquid elements at room temperature:
NOTE:
There are only two liquid elements at room temperature:
Mercury and Bromine

4. Testing a Solid Look for visual clues
Test with a magnet – If all magnetic, could be __________________________
If some magnetic and some not, could be __________________________

5. There are no elements that are white crystals or powders!!
I am NOT an element!
Neither am I!

6. Try to dissolve sample in water
Filter. Look for a residue. Save the filtrate
If a residue is found in the filter, there is a substance which doesn’t dissolve in water.
Filtrate comes through the paper

7. Evaporate a small sample of the filtrate and look for another residue after evaporation
If a residue is found in the test tube after evaporation, there must be a substance that DID dissolve in water.
If no residue is found, then maybe nothing dissolved in the water.

8. If there was a residue in the paper, but not in the evaporated filtrate, then nothing dissolved. The sample could have been
__________________________________________
If there was no residue in the paper, but a residue in the test-tube then all the sample dissolved. The sample could have been
__________________________________________ If there is one residue in the paper and another residue in the test-tube, the original sample must have been a ______________________________