STEM camp was a whirl-wind. Here are links and some of the experiments that we performed during camp. I have put them together by day of the week. I hope your family enjoys them!

Monday - Chemical Reactions

1. Mentos + Diet Coke

This is super easy!

Materials Needed:

* Mentos

* 2 Liter Diet Coke

* (Optional) Geyser Tube -- I have seen these online, but I made mine by rolling up a piece of thin card board (think cereal box) and I put a paper clip through it to hold the mentos. This really helps to time when you do the experiment.

Procedure: Make sure you are outside! Simply place mentos into Diet Coke and stand back. The Geyser tube will let you put several mentos in at one time.


2. Dough Volcano

The students loved this one!

Materials Needed:

* Flour

* Salt

* Baking Soda

* Vinegar

* Food coloring (Optional)

Procedure:

https://www.youtube.com/watch?v=N1TL_vpM8Ec This is the link I used but I cut everything by a 1/3 to make a smaller volcano.


3. Oobleck

An amorphous solid! Ask your children what that means!

Materials Needed:

* Cornstarch

* Water

* Food coloring (Optional)

Procedure:

Simply mix the corn starch and water in a 1 to 1.5 ratio. I used 1/2 cup of corn starch and 1/2 cup of water (adding a little extra after the corn starch has been needed). You want it to look runny but not be runny (if that makes sense). https://www.steampoweredfamily.com/activities/oobleck-summer-science-fun/


4. Making Butter

This takes some effort!

Materials Needed:

* Heavy Cream

* Pinch of salt (if salty butter desired)

* Honey (if honey butter desired)

* Jar

Procedure:

We used small canning jar. No matter what size jar you use, fill it 1/2 way with heavy cream. Then put the lid on the jar and shake!!

After about 5 minutes, the heavy cream will be whip cream. After about 5 more minutes, butter will start to form. Next, the butter and buttermilk separate. Once you pour off the buttermilk, you have butter left!


5. Exploding Bags

I used snack bags and filled each bag about 1/3 full with vinegar. Put 1 tablespoon of baking soda in 1 square of toilet paper. Then wrap the toilet paper up so it hold the baking soda (looks like a wonton). Put the baking soda into the ziplock bag and close it quickly. Set it down and watch it explode!! (You need to do this outside!)


Tuesday - Design Process

1. Floating Gummy Worms

Materials Needed:

* Gummy Worms

* Baking Soda

* Vinegar

Procedure:

First cut the gummy worms into 1/3 or 1/4 size length wise (if they are too big, then they will not float). Make a baking soda (1 cup) and water solution (3 Cups). Place gummy worms in baking soda solution for 15 minutes. Gummy worms will soak up baking soda during this time. Pour vinegar into a clear glass and then put soaked gummy worms into the vinegar (no more than 4 works best!). Gummy worms will float as the baking soda reacts with the vinegar.


2. Straw Rockets

There are no wrong designs!


3. Marshmallow Tower

Materials Needed:

* Marshmallows

* Spagetti

Simply try to build the tallest free-standing structure you can.


4. Solar Oven


5. Popcycle Catapult

Wednesday - Biology Day

1. Balloon Rocket


2. Candy DNA

Materials Needed:

* 4 Soft Candies of different colors

* Twislers

* Toothpicks


Procedure:

DNA is made of 4 nitrogen bases (Adenine, Thymine, Cytosine, & Guanine). Adenine always binds with Thymine. Cytosine always binds with Guanine. Assign a different color for each nitrogen base. Place an Adenine and a Thymine one a toothpick. Place a Guanine and a Cytosine on a toothpick. After you have made several of these, place 2 twislers (one on each side) and hook the toothpick into the twisler on each side. It will end looking like a ladder.


* Remember, DNA actually looks like a twisted ladder called a double helix.


3. Strawberry & Banana DNA

You can actually see DNA without a microscope!

Materials Needed:

* Strawberry and/or Banana

* Isopropyl Alcohol (Higher percentage of Alcohol the better)

* Ziplock bags

* Paper coffee filters

* Cup

* Salt

* Shampoo or Dish soap

* Test tube or small glass bottle


Procedure:

Start by putting your rubbing alcohol in the refrigerator (I do this the night before usually). Now peel the banana and discard the peel if using a banana. Place your chosen fruit into a plastic bag and push out all the air. Then mash you fruit for 2 minutes. Then open the bag and pour in about 10 ml of magic solution (magic solution is made by mixing 1 cup of water, 1 tablespoon of shampoo or dish soap, and 2 tablespoons of salt). Reseal the bag and mash for 1 minute (remember to squeeze out the air before beginning). Next the coffee filter over the cup and pour the contents into the filter. You want to separate the pulp from the juice. Make sure to not let any pulp go into the cup. You do not need much juice but you will pour this into your test tube / small glass bottle. Now you will add the cold alcohol to the juice test tube (pour it down the side so that two layers form). The DNA will form between the two layers.

Strawberry DNA starts looking like bubbles. Banana DNA starts looking like a small white cloud.


4. Magic Balloons

Thursday - Density

1. Lava Lamps

Material Needed:

* Vegetable Oil

* Water

* Food Coloring

* Alka-seltzer

* Clear Jar or Cup

Procedure:

Fill your cup or glass 3/4 full with vegetable oil. Then pour enough water into mixture to cover the bottom of the cup or glass. Add 3 or 4 drops of food coloring (use different colors). Finally, add 1 alka-seltzer (I like to break the alka-seltzer into pieces and add a little at a time) to the cup or jar and watch what happens!


2. Jar of Fireworks

Material Needed:

* Vegetable Oil

* Water

* Food Coloring

* Clear Jar or Cup

Procedure:

Fill your cup or jar 3/4 full with water. In a separate bowl mix 2 tablespoons of vegetable oil and 3 drops of food coloring (use different colors). Food coloring will not dissolve in the vegetable oil; therefore, take a fork and gentle mix to make the food coloring drop split into many drops. Then gently pore the vegetable oil / food coloring mixture into the cup or jar and watch as the food coloring hits the water!

3. Elephant / Reindeer Toothpaste


4. Airplane Challenge


5. Density Balloons


6. Fizzy Lemonade


Friday - Water / Bouyancy

1. Bouyancy Boats

Material Needed:

* Reynolds Wrap

* Water

* Large Pan

* Pennies

Procedure:

Take a 5 X 5 inch square of reynolds wrap and see what kind of boat you can build. Then test out in a pan of water how many pennies the boat can hold before sinking. Try different designs.


2. Adhesion of water

Material Needed:

* Penny

* Water

* Dropper

Procedure:

Take a penny and see how many drops you can get to sit on top without it spilling off.


3. Walking Water


4. Homemade Ice Cream in a bag