Valentines Science Experiments
What kid doesn't love slime?! This is a fun craft to make and can be given as a gift with the free "Happy Valen-slime Day" printable tag from thebestideasforkids.com.
Ingredients Needed to Make Valentine Slime
- 1 Bottle of Elmer’s Glitter Glue (6 oz). We used red and pink. Note: We have only tested this with Elmer’s glitter glue and recommend this brand as other brands may not work.
- 1 TBSP or more (up to 1 cup) water which will make your slime stretchier.
- Red & Pink Glitter
- 1/2 TBSP Baking Soda
- 1½ TBSP of Contact lens solution. **Important: your brand of contact lens solution must contain boric acid and sodium borate. See our full contact solution slime recipe for the brands we recommend.
Steps for How to Make Slime With Contact Solution:
1. Get a bowl to mix your slime ingredients in.
2. Pour your entire 6 oz Elmer’s Glitter Glue into the bowl (or 3/4 cup of glue from a larger bottle).
3. Add your 1/2 teaspoon of baking soda and mix in thoroughly. Also, add up to 1/4 cup of water if you want a more stretchy slime.
4. Slowly add in your contact lens solution (Reminder: your contact lens solution should contain boric acid or your slime will not form). Add it in slowly and mix if possible so that you can adjust and ensure you do not add too much. We like to add in 1 tablespoon to start and then mix. Then slowly add in the rest. Knead and mix thoroughly before adding more as you do not want to add too much or your slime will get too hard.
5. Now mix until your slime forms and begins to harden. Take it out and knead, knead, knead. You may be surprised how much you need to knead to really make the slime form. It will be very sticky at this point. Especially if you added water. Keep kneading and stretching the slime and it will become less sticky. If it’s not the desirable consistency keep kneading. Only add a little more contact solution a teaspoon at a time to prevent the slime from becoming too hard. If you still find it to still be too sticky, add a little bit of lotion or baby oil to your hands.
Borax Crystal Hearts
Another fun Valentine’s day science experiment is growing your own borax crystal hearts. These will start to form within 24 hours and it’s a really fun science experiment for kids to observe!
Here is what you will need:
- A mason jar
- Borax (adults only to handle)
- Boiling water (adults to assist)
- Red pipe cleaners and craft sticks
Steps for How to Make Borax Crystal Hearts:1. Add 3 tablespoons of borax powder for every 1 cup of boiled water into a mason jar. Stir to make sure all of the borax dissolves in your water. Adults only should do this part – the boiled water in the jar will be very hot and borax is a chemical that only adults should handle. Please keep borax out of reach from young children. It is best to wear protective eye gear during this step as well.
3. Add your heart pipe cleaner into your jar with borax solution and let it sit for 24 hours. Check in throughout the day to see the progress of your crystals growing on the pipe cleaner!
4. After 24 hours you should have fully formed crystals on your heart! You may even get some crystals formed on the bottom of your jar.
The science behind it:
Magic Milk Heart Experiment
Watch the "magic" interaction with this final experiment!
Here is what you will need:
- Milk – high-fat milk works better (we used 3.25%)
- Dish soap
- Food Coloring – red and pink
- Heart-shaped cake pan or regular pan – you can also use small heart cookie cutters
- Cotton swabs or cotton balls
Steps to do a Magic Milk Experiment:
3. Now dip a cotton swab into some dish soap. You can also soak a cotton ball. Gently tap the cotton swap onto your food coloring or drop your cotton ball in. Now watch the magic!