Lab Report: Physical and Chemical Changes Essay Sample
1. Label 7 of the dishes with the names of the undermentioned merchandises: Sulfur. Iron. Sodium Bicarbonate. Sodium Chloride. Sugar. Sand. and Magnesium. Place little samples of each in the appropriate dishes.
2. Analyze each sample with a magnifying glass and magnet and enter your observations in the informations tabular array.
3. Put little samples of each substance in a trial tubing along with 3 milliliters of H2O to find their solubility.
4. Mix some of the Iron and Sulfur on a clean disposable dish and analyze the mixture with a magnifying glass and magnet. Record your observations in the informations tabular array. Save and label this mixture.
5. Mix some of the sand and Sodium Chloride on a clean disposable dish and analyze the mixture with a magnifying glass and magnet. Then. topographic point this mixture in a clean 100-mL beaker. Add 30 milliliter of tap H2O and splash. Fix a filtration apparatus. filter. and enter your observations.
6. Pour 10 milliliter of the filtrate into an evaporating dish. fix a warming apparatus. and gently heat until all of the liquid is gone. Analyze the residue in the evaporating dish and on the filter paper.
7. Using the crucible tongs. keep a dry piece of Magnesium thread in the fire. Quickly topographic point the firing thread on the ticker glass. Compare the visual aspect of the thread before and after combustion.
8. Put the burned leftovers of the Magnesium into a clean trial tubing. and add 10 beads of Hydrochloric acid to it. Besides. add 10 beads to the original Magnesium. Feel the underside of each tubing.
9. Put some sugar in a clean trial tubing and heat it. Watch for alterations and sporadically look into for olfactory properties. Record your consequences.
10. Scrape some of the sugar residue into a clean trial tubing and add 3 milliliter of H2O to prove its solubility. Record your consequences. Then add 5 beads of Hydrochloric acid to it and experience the underside of the tubing.
11. Add 5 beads of Hydrochloric acid to the trial tubing with the Sodium Bicarbonate dissolved in H2O. Feel the underside of the tubing and note the aggregation on the sides.
12. Put the sample of the Iron and Sulfur mixture into a clean trial tubing. Heat it smartly for several proceedingss. Submerge the hot trial tubing into H2O. Test it for magnetic attraction.
Data and Observations:
Data Table 1: Physical Properties of Matter
Substance Physical State Color Odor Solubility Magnetism
Sulfur solid yellow none partly no
Iron solid brown rusty metal yes yes
Sodium Bicarbonate solid white none yes no
Sodium Chloride solid white none yes no
Sugar solid white sweet yes no
Sand solid sunburn none partly no
Magnetism solid Ag metallic no no
Data Table 2: Observation of Physical and Chemical Changes
Iron and Sulfur mixture with magnet Merely the Fe is magnetic ; Sulfur is less clumpy
Sodium Chloride and sand mixture
With H2O –
Sand stays in the filter
Water evaporates ; Salt stays in dish
Magnesium burned in air Burns bright white
Magnesium reacted with acerb Temperature rises a small ; Fizzes
Combusted merchandise reacted with acerb Temperature rises a batch ; Fizzes
Sugar heated Smelled like burnt marshmallows ; Smoked ; Turned black
Sodium Bicarbonate Temperature rises a small ; Droplets form on inside of tubing
There were no computations made in this lab.
Physical alterations do non alter the belongingss of the single substances. Chemical alterations will impact the belongingss.