Glaak Attack

Jessica GoolsbyEduc 373

Science Standard 3 – The Physical Setting

• 6.3.18 • Investigate and describe that when a new

material, such as concrete, is made by combining two or more materials, it has properties that are different from the original materials

• Taken from: http://dc.doe.in.gov/Standards/AcademicStandards/StandardSearch.aspx

• Link to activity: http://www.indianastandardsresources.org/files/sci/sci_6_3_18.pdf

Definitions

• Materials - the substance or substances of which a thing is made or composed

• Properties - an essential or distinctive attribute or quality of a thing: the chemical and physical properties of an element.

• Taken from www.dictionary.com

Materials

• 125 ml liquid laundry starch• 62.5 ml white all-purpose glue• 2.5 ml salt• Science journals• Waste container

Discussion

• Create a list of different materials that you can think of that can be made by combining two or more materials.

• Think about materials that don’t have the same properties.

• Describe the properties of each ingredient and the final material.

Glaak• Today you will be making a new substance

called Glaak. You will make it by combining materials that will result in a new material. This is what it should look like in the end.

How do they look?

• Looking at all of the ingredients in front of you describe their properties. Write your answers in your science journal. Salt, Starch, and Glue.

• Draw a picture detailing what they each look like.

How to make it

• Ingredients:• 125 ml liquid laundry starch• 62.5 ml white all-purpose glue• 2.5 ml salt

Combine the starch with the salt and stir until the salt is dissolved. Next, add the glue and stir until a lump of Glaak forms.

Questions• Answer the following questions in your science

journal.• What has happened to the properties of each

ingredient?• Does the Glaak have the same properties of the

original ingredients?• How would you describe the Glaak?• Why did the properties of the ingredients

change?• Now you can play with your Glaak!

References

• www.dictionary.com• http://dc.doe.in.gov/Standards/

AcademicStandards/StandardSearch.aspx• http://www.indianastandardsresources.org/

files/sci/sci_6_3_18.pdf• Matter: Its Properties and Its Changes

(Investigate the Possibilities Series) by Tom DeRosa and Carolyn Reeves