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

Crystal video

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

Borax Crystals time lapse video

Ratio; 3 Tablespoons Borax per 1/2 cup water

Materials

1)

2)

3)

4)

5)

Process

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

Sugar Crystals

Sugar crystals video

Ratio: 1 cup sugar to 1/2 cup water

Materials

1)

2)

3)

4)

5)

Process

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

Salt Crystals

Salt crystals time lapse video

Ratio: 4 Tablespoons salt to 1/2 cup water

Materials

1)

2)

3)

4)

5)

Process

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

Step 6:

Findings

Describe your crystals in the table below.

Crystal Type	Shape (Describe the shape)	Size (of individual crystals)	Hardness (Crumbly to Rock Hard)
Borax	Cube	small
Sugar	square	small
Salt	square	small

What crystals worked out best and why?:






Conclusion:






________________________________________________________________________

After watching the videos as a class, explain how the following crystals are formed:

Type	Explanation
Salt	As the water evaporates from the solution, the Na and Cl atoms begin to bond together, first as single molecules and then the molecules bond together, forming crystals. Every molecule will form the same shape crystal each time it forms. The crystal shape for salt is a cube like a six-sided die.
Sugar	Rock candy is created through processes called crystallisation.  sugar is a type of crystal.
Snowflakes	A snowflake begins to form when its extremely cold. A snowflake is mad from frozen water.

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	Picture	2 EXAMPLES
cubic	6
tetragonala	6
triclinic	12
orthonmbic
hexagonal
monoclinic
Trigonal