Crystal Growth
Published on Mar 30, 2016
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PRESENTATION OUTLINE
CRYSTAL GROWTH
BY: ISABELLE LABRIE & ANDREA MORENO
BACKGROUND INFORMATION
Ionic compounds form regular crystal structures. The sodium ions and chloride ions give the sodium chloride the crystals shape. Other ionic compounds like calcium chloride, have equal and different structures. When enough force is applied to the crystal, it can shatter.
Photo by amandabhslater
HYPOTHESIS
If we mix borax and hot water in a cup and set a paper clip tied to a string inside of the cup, then a crystal will form on the paper clip within a few days because of the chemical bond between the borax and the hot water.
Photo by cobalt123
MATERIALS
* Crystal-growing substance
* 2 Glass beakers
* Hot tap water
* Stirring stick
* Cotton string
* Paper clip
* Pencil
* Hand lens
Photo by flickrolf
PROCEDURES
1. Add a small amount of the crystal growing substance to a beaker of hot tap water. Stir until it mixes completely with the water. Keep adding the substance and stirring until no more will dissolve.
2. Pour the mixture into another beaker
Photo by ecstaticist
Procedures pt. 2
3. Tie one end of the string to the paper clip and the other end to a Popsicle stick. Lower the paper clip into the solution and lay the Popsicle stick across the top of the beaker. The paper clip should hang at about the middle of the beaker.
4. Use a hand lens to observe the paper clip several times a week.
Photo by ecstaticist
DATA/ OBSERVATIONS
When we took the crystal out of the cup one day after we put the paper clip into the crystal substance, a crystal had already formed. We thought it would take longer for a full crystal to grow, however we were proved wrong.
Photo by Filippo C
PICTURES
ANALYSIS
In the beginning of our project, we mixed borax and hot water together. We tied a paper clip onto a string and put a string on a Popsicle stick. We let it sit in the mixture overnight. When we checked it in the afternoon, a crystal had formed. We predicted that it would take a little longer for a full crystal to form. We proved our hypothesis incorrect.
Photo by skoeber
