JC STEM Summer Lessons & Resources K-4

Lab Safety Guidelines 1. Remember to conduct yourself in a responsible manner at all times 2. Review all safety information and procedures before beginning any activity or investigation. 3. Never eat, drink, chew gum or touch your eyes while working in the lab. 4. Keep your work area clean and neat. 5. Always make sure your instructor is present when you are working in the lab. 6. Never remove chemicals or equipment from the lab area. 7. Always wear ANSI Z87.1 approved chemical splash goggles when you are conducting experiments. 8. Be aware of the location of all safety equipment, including eye-wash stations, deluge showers, fire extinguishers and safety blankets. 9. When laboratory aprons are required, be sure to keep your apron tied throughout the entire activity. 2 Proprietary & Confidential



Table of Contents • Recommended Setup and List of Ma • Intro to Chemistry • Slime Lab 3 Proprietary & Confidential

aterials

Recommended Set Up and List • This activity has been done in large also been done in the classroom. • For large numbers of students such as th purchase the glue by the gallon and disp • For the classroom based activity, it w groups of 6 per volunteer. Modify a • The box of Borax powder will be suf experiments. • Dispense several table spoons of bo group of students. You can also pre-mak squeeze bottle for easier dispersal. • All other materials listed are per stud .4 Proprietary & Confidential

of Materials e numbers at science festivals and has hose at a festival, it is recommended to pense into squeeze bottles for easier dispersal. works well to break the students into as needed. fficient for 100s of student orax powder into a bowl for each ke the borax solution and have it available in a dent unless otherwise noted.

List of Materials, 1 Material Water Elmer’s Glue-white or gel Borax Plastic cup Ziplock bags Plastic spoon 5 Proprietary & Confidential

Qty 1 per group 1 per 3 students 1 box per class 2 1 2

List of Materials, 2 Material Food coloring-neon colors recommended Small bowl-plastic, paper or glass Paper towels Condiment Bottle(s)-if using gallon of glue Plastic table cloth 6 Proprietary & Confidential

Qty 1 set per group 1 per group 1 per class 1 per volunteer 1 per table

Table Set Up Volunteers sta water glue Students stan 7 Proprietary & Confidential

and on this side water glue nd on this side

Table of Contents • Recommended Setup and List of Ma • Intro to Chemistry • Slime Lab 8 Proprietary & Confidential

aterials

Introduction to Chemistry? You might think that chemists a who wear lab coats and look at know that many toys you play w 9 Proprietary & Confidential

are a bunch of boring scientists beakers all day, but did you with are made using chemistry?

Chemistry in Action Some of your favorite toys like Gak chemistry 10 Proprietary & Confidential

k, Slime and Silly Putty started out as experiments.

Who are Chemists? In fact, some of your favorite toys m who work for t YlnMn Blue 11 Proprietary & Confidential

may have been invented by chemists toy companies

Intro to Chemistry • Chemistry is the study of matter, an with other kinds of matter. There are can be described using the concept • Toys like silly putty are unique beca are different from the properties of o different kinds of properties, chemic properties. 12 Proprietary & Confidential

d how matter behaves and interacts e many different kinds of matter, which t of properties. ause they have distinct properties that other types of matter. There are two cal properties and physical

Chemical Properties • Chemical properties are qualities th a chemical reaction, like when vine • Physical properties are qualities th change, like the melting of an ice cub to describe the state of some matter 13 Proprietary & Confidential

hat can be observed during egar reacts with baking soda hat can be observed during a physical be. Physical properties can be used r, which can be a solid, liquid or a gas.

Ratios • The unique physical and chemical pr by the amount of each different ingre • Sometimes the amount of one ingre another ingredient can make a big d • This is called a ratio, and a ratio can ingredient to add to your mixture so y has desirable properties. 14 Proprietary & Confidential

roperties of a mixture can be changed edient used to make them. edient compared to the amount of difference. n be useful to know how much of each you will end up with a mixture that Ratio for Brownies: 1 : 1/2 : 2 : 1 Cup of Cup of Eggs Box of water oil Brownie Mix What do you think would happen if you change this ratio?

Table of Contents • Recommended Setup and List of Ma • Intro to Chemistry • Slime Lab 15 Proprietary & Confidential

aterials

Slime Lab Overview Through the mixing of Borax powder, ratio, you will make your own chemica 16 Proprietary & Confidential

water, and Elmer’s glue in a specific al polymer-SLIME

Slime Ingredients • Elmer’s Glue: Made up of a synthet small chemical groups called acetate one another to create a solution that c • Borax: Borax (a white powder deterg molecules linking them together to for 17 Proprietary & Confidential

tic polymer chemical which has many es. Their size allows them to pass by can pour and move around. gent) reacts with the acetate rm a more solid mixture.

Preparation Prior to Activity With 1 Cover tables with plastic table cloth 2 Add several tablespoons of Borax powder to a bowl for each group 3 Place additional items at each group station • Ziplock bag for students to take home slime mixture • Two empty plastic cups per student • 2 Spoons for mixing, for each student • Food coloring • Bottles of glue • Water • Student Instructions • Paper towel 18 Proprietary & Confidential

h Students p

Student Activity Instructions Create your glue solution • Pour 1-2 tbsp of glue into one of your two plastic cups • Pour a few drops of water 1 into the glue and mix with the plastic spoon • Continue to add water and mix until glue is dissolved and mixture is smooth 19 Proprietary & Confidential

Repeat as needed

Student Activity Instructions Create your Borax solution • Add 2-3 pinches of borax powder to your second cup • Add several drops of water 2 into the powder and stir with your spoon until the powder dissolves. Add more water as needed. • Add 2-3 drops of food coloring of your choice 20 Proprietary & Confidential



Observations • Observe and record the physical and mixtures. • Things to note: − What color is the solution? − Does it stick to the spoon or easi − Does it have any odor? Sweet? − What temperature is the solution 21 Proprietary & Confidential

d chemical properties of your two ily pour off? Sour? Spicy? Odorless? n? Cool? Warm? Room temperature?

Student Activity Instructions Combine your two mixtures • Quickly pour your Borax solution into your glue solution. • Hold your cup with one hand and vigorously stir the 3 combined mixture with the spoon. • Observe the temperature, color, and other properties of the combined mixture. • Remove slime ball from your cup and place in ziplock bag to take home. 22 Proprietary & Confidential



Wrap Up Questions • How fast did the reaction between th • Did you have any liquid left in your c slime? • If there was liquid left, why do you th • Did everyone at your table have the not, what was different? • If you were to do this activity again, w do differently? Would you change th 23 Proprietary & Confidential

he Borax and the Glue occur? cup or did all of the solution turn to hink it was there? same experience making slime? If what if anything would you change or he ratios?