Crystal

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) Pipe Cleaners x3

2) String

3) Pegs x1

4) Cups

5) Borax

6) 

7) 

Process

Step 1: Shape pipe cleaners into a star

Step 2: Hang star on a peg

Step 3: Make up borax solution

Step 4: Label your cup

Step 5:

Step 6:

Conclusion: Today in Science, we are making Crystals out out of 3 different types of crystals we can see in our Kitchen. The three types of crystal I'm talking about are Sugar, Salt and 

Sugar Crystals

Sugar crystals video

Ratio: 1 cup sugar to 1/2 cup water

Materials

1) Sugar

2) Cup

3) Stirring Sticks 

4) String

5)

Process

Step 1: Put one cup of Sugar in a cup

Step 2: Put 1/2 cup of warm water in the same cup

Step 3: Stir very well 

Step 4: Tie the string on the stirring stick and put it in the solution

Step 5:

Step 6:

Salt Crystals

Salt crystals time lapse video

Ratio: 4 Tablespoons salt to 1/2 cup water

Materials

1) Salt

2) Water

3) String 

4) Stirring Stick 

5) Cup

Process

Step 1: Put some water on the cup 

Step 2: Then put four tablespoons of salt then start stirring with a stirring stick

Step 3: Once you've stirred it well, tie a string on the stirring stick then leave it in the cup for a few days

Findings

Describe your crystals in the table below.

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

What crystals worked out best and why?:

Conclusion:

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

Type	Explanation
Salt	It is typically formed by the evaporation of salty water which contains dissolved Na+ and Cl- ions. One finds rock salt deposits ringing dry lake beds, inland marginal seas, and enclosed bays and estuaries in arid regions of the world.
Sugar	Most of the sugars are made by Sugar canes or Sugar beets.
Snowflakes	A snow flake is made by a drop of water and freezes.

CRYSTAL TYPES

AIM: TO LOOK AT THE 7 DIFFERENT TYPES OF CRYSTALS

Sugar Crystals