hurumanu science: Crystals

Aim: To learn about a saturated solution and how to make crystals

Definition of solution: 

A liquid mixture, when something is dissolved into a liquid (eg: sugar in water) 

Definition of saturated: 

Having or holding as much as can be absorbed of something (when no more sugar or borax can be dissolved into the water)

In groups of three you will make three different types of crystals and compare the results.

Borax Crystals

Ratio; 3 Tablespoons Borax per 1/2 cup water

Materials

1) A cup or a glass

2) Pipe cleaner

3) Borax

4) Popsicle stick

5) String
6) Warm water
7) Spoon

Process

Step 1: Grab a cup or glass

Step 2: Put 3 table spoons of borax and 1/2 cups water

Step 3: Add ingredients to the cup

Step 4: Mix it together with your Popsicle stick 

Step 5: Tie your string to the Popsicle stick

Step 6: Make a star with your pipe cleaner, tie this to your string
step 7: Put your star into the borax and water solution 

Sugar Crystals

Ratio: 1 cup sugar to 1/2 cup water

Materials

1)Popsicle stick

2)Cup

3)Warm water

4)String

5)Spoon
6)Sugar

Process

step 1: Get a cup 

Step 2: Put 4 table spoons of sugar into the cup 

Step 3: Then put 1/2 cups of warm water into the cup

Step 4: Mix the sugar and the water with your Popsicle stick

Step 4: Tie a piece of string on to tour Popsicle stick

Step 6: Hang the string into the water and sugar solution 

Salt Crystals

Ratio: 4 Tablespoons salt to 1/2 cup water

Materials

1)Cup 

2)Popsicle stick

3)Warm water

4)String

5)Spoon
6)Salt

Process

Step 1: Get a cup 

Step 2: Put 4 table spoons of salt into the cup 

Step 3: Then put 1/2 cups of warm water into the cup

Step 4: Mix the salt and the water with your Popsicle stick

Step 4: Tie a piece of string on to tour Popsicle stick

Step 6: Hang the string into the water and salt solution

Findings

Describe your crystals in the table below.

Crystal Type	Shape (Describe the shape)	Size (of individual crystals)	Hardness (Crumbly to Rock Hard)
Borax	snow flake	medium	hard
Sugar	no crystals	small	wet
Salt	worm	small	crumbly, brittle

What crystals worked out best and why?:

Conclusion:

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CRYSTAL TYPES

AIM: TO LOOK AT THE 7 DIFFERENT TYPES OF CRYSTALS

Salt Crystals

Sugar Crystals

Borax Crystals

7 different crystal shapes

The 7 types of crystals

Type	Number of sides	2 examples	Image
Triclinic Definition:	7
Monoclinic Definition:	10
Orthombic Definition:	6
Trigonal Definition:	10
Hexagonal Definition:	8
Cubic Definition:	6
Tetragonal Definition:	12

Explain how the following crystals are formed?

Type
Salt	sea water pond sun evaporate water salt
Sugar	sugar cane cut it squish/roll sugar cane juice heat evaporate sugar crystallises
Snowflakes	dust water freezes to dust more water freezes to it

orate