Homemade Invisible Ink and Glow in the Dark Message Recipes for Kids

Hey Kids, ever wonder how you can make your over own invisible ink or write glow in the dark messages?  Look no further these easy and fun to make homemade recipes will have you writing like a secret agent in no time.
Invisible Ink with Lemon Juice 1

Materials: 1 lemon cut in half, water, spoon, small bowl, cotton swab or Q-Tip, white computer paper, lamp

Step 1: Squeeze both halves of your lemon over the bowl.

Step 2: Add 2-3 drops of water to the lemon juice and mix with your spoon.

Step 3: To write your message dip the cotton swab or Q-Tip into the mixture and write your message on the white computer paper.

Step 4: To see your message hold your paper up to the light.  After a little bit your message will show up on the paper.

How does this work?  The lemon juice oxidizes (combines with oxygen) and turns brown when it heats up.  The light heats up the lemon juice enough for it to turn brown revealing your message!

You can also try this experiment using milk, grape juice, apple juice or vinegar.


Invisible Ink Lemon Juice 2

Materials: Lemon cut in half, bowl, cotton swab or Q-Tip, white computer paper, salt, wax crayon

Step 1: Squeeze both halves of your lemon over the bowl.

Step 2: Dip your cotton swab or Q-Tip in the lemon juice and write your message on the white computer paper.

Step 3: Before the lemon juice message dries pour some salt over the message.

Step 4: Wait about 2 minutes then wipe all the salt away.

Step 5: Color over the entire message with a wax crayon and your message will be revealed.


White Crayon Invisible Ink

Materials: white wax crayon, white computer paper, highlighter or water color paints

Step 1: Pressing hard write a message using the white wax crayon on your paper.

Step 2: Color over the entire paper with a highlighter or paint over it with water colors and your message will be revealed.


Glow in the Dark Message

Great for Halloween parties!

Materials: Petroleum Jelly or Vaseline, cotton swab or Q-Tip, blacklight, white computer paper

Step 1: Dip your cotton swab or Q-Tip in the Petroleum Jelly or Vaseline.

Step 2: Using the dipped cotton swab or Q-Tip write your message on the white computer paper.  Try to make the writing as smooth as possible getting rid of any bumps.

Step 3: Turn off all the lights and turn on the blacklight,  Your message will be revealed!


How do Plants take in Nutrients? Celery Science Project for Kids

This is a pretty simple science experiment.  It’s good for children Kindergarten-2nd grade.  In this experiment children will be able to observe osmosis in plants.

Question:  What will happened to the celery when it’s left in the colored water.

Materials: 6-8 drops of red food coloring, tall glass, water, 1 celery stalk with its leaves.


Step 1: Pour water into the tall glass until it is half way full.

Step 2: Add 6-8 drops of food coloring to the water.  Make sure the water is a nice bold color red.

Step 3: Place your stalk of celery into the glass with its leaves sticking out.

Step 4:  Put the glass in a window where it can get the sun.

Step 5: Observe the celery for a 24 hours.

Analyze your Data: 

What happen to your celery?

You observed osmosis! The leave of the celery will turn a reddish color.  Celery is a vegetable and vegetables are plants..  Plants absorb minerals and water from the soil.  These minerals and water make the plant heathy and able to grow.  When the water and minerals are absorbed in to the plant they flow through the plants cells. The process where the water flows across the plant’s cell wall to enter the plant cell is called osmosis.  The colored water traveled up the celery and into its cells.

What Makes Peanut Butter Smooth? Science Project for Kids

This Science project is good for elementary school children up to 3rd grade.
Have you ever wondered why peanut butter is smooth? Well, in this fun and easy Science experiment kids will learn about the chemical process of hydrogenation.
Question: What makes peanut butter smooth?
Materials: 1 jar of natural peanut butter, 1 jar of Skippy creamy peanut butter, 1 spoon, 2 cereal bowls
Step 1: In the first bowl add two large spoonfuls of the natural peanut butter.  Mix it well with the spoon.
Step 2: In the second bowl add two large spoonfuls of the Skippy creamy peanut butter.  Mix it well with the spoon.
Step 3: Let both bowls of peanut butter sit still for 1 hour.
Step 4: Look what happened and record your results.
What Happened to the Bowls of Peanut Butter?
The Skippy creamy peanut butter will still look creamy and smooth.  The natural peanut butter has a layer of oil on top, why?  Peanuts contain oil naturally.  When peanuts are mashed together to make peanut butter, the oil separates from the peanut. When you mixed the natural peanut butter the oil mixed with the peanuts.  When you let it sit for an hour the oil separated itself from the peanuts again.  This caused the oil to sit on top of the peanut butter.  Why doesn’t this happen to the Skippy peanut butter?  Because it was put through a process called hydrogenation.  Hydrogenation is a chemical reaction that turns liquid oil into solid fat by combining the oil with hydrogen gas.  The hydrogenation process changes the atoms in the liquid oil into a solid fat this makes the peanut butter smooth and creamy.
A closer look
Look at different labels on foods.  See how many ingredients contain hydrogenated oils. You’ll be surprised.

What Happens When you Mix an Acid with a Base? Fun and Easy Acid and Base Science Projects for Kids

An acid is a substance that reacts with a base.  They are usually identified as a sour tasting chemical. Common acids found in the kitchen are lemons, apple juice, orange juice, vinegar and black coffee. A base is a substance that will neutralize an acid.  Common bases found in a kitchen are baking soda and egg whites.

In the 3 Science experiments below kids with work with Acids and Bases.



Experiment 1

Question: How Can You Tell an Acid from a Base?

Materials: can of red cabbage, strainer/colander, bowl, 3 glass jars, 1 tablespoon of vinegar, 1 tablespoon of baking soda, 1 tablespoon of distilled water, can opener
Step 1: Open the can of red cabbage, using the strainer/colander drain the cabbage juice over the bowl.
Step 2: Put 2 tablespoons of red cabbage juice into each of the three glass jars.
Step 3: Add 1 tablespoon of vinegar to the first jar, add 1 tablespoon of baking soda to the second jar and add 1 tablespoon of distilled water to the third jar.
Step 4: Watch what happens and record your results.  What color did the liquids in the jar turn?

What Happened in the Jars?

The red cabbage juice is a chemical indicator.  A chemical indicator is a substance that turns color when other substances are present. In the first jar you added vinegar which is an acid to the red cabbage juice.  The red cabbage juice turned redder. The stronger the acid the stronger color the chemical indicator (red cabbage juice) will turn. The baking soda (base) was added to the second jar.  You will notice that the chemical indicator (red cabbage juice) turned green.  In the third jar you added distilled water.  The distilled water is a neutral property.  You will notice the the chemical indicator (red cabbage juice) did not change colors.

Experiment 2

Question: What Happens When you Mix an Acid with a Base?

Materials: 1 cup water, 1/2 cup vinegar, 1 cup orange juice, 3 teaspoons baking soda, 3 cereal bowls
The orange juice and vinegar are your acids and the baking soda is the base.
Step 1: Pour the water in the first bowl, vinegar in the second bowl and orange juice in the third bowl
Step 2: Pour 1 teaspoon of baking soda into each of the bowls.
Step 3: Watch what happens and record your results.

What Happened in the Bowls?

The bowls with the vinegar and orange juice started to fizz and became bubbly. When the baking soda (a base) combined with the vinegar and the orange juice (the acids) a chemical reaction occurred and a new substance was created carbon dioxide. The fizzing and bubbles tat you see are the carbon dioxide begin released.  In the bowl with only water now bubbling or fizzing occurred, why? This is because water is neither a base or and acid.  It is a neutral property.




Experiment 3

Question: What Happens When You Cook a Vegetable in and Acid or a Base?

Materials: 3 cups of water, 3 small saucepans, 1 1/2 cups frozen broccoli florets, 1 tablespoon lemon juice, 1 teaspoon baking soda.
As with any project that requires a stove, adult supervision is required
The lemon juice with be the acid and the baking soda will be the base in this experiment.


Step 1: Pour 1 cup of water in each of the saucepans.
Step 2: Pour 1/2 cup of the frozen broccoli florets in each of the saucepans.
Step 3: Pour 1 tablespoon of lemon juice in the first saucepan, Pour 1 teaspoon of baking soda in the second saucepan, pour nothing in the third saucepan.
Step 4: Let the broccoli cook for 7 minutes.
Step 5: Watch what happens and record your results.

What Happened to the Broccoli?

The broccoli cooked in the baking soda (the base) will be the mushiest and a bright green color.  The broccoli cooked in the lemon juice (the acid) will be a yucky olive green color.  The broccoli cooked in the water will stay it’s natural green color.

Why Did the Color Change?

Green vegetables are rich in chlorophyll. Chlorophyll is what gives vegetables and grass their green color. When an acid (the lemon juice) was added to the water to cook the broccoli a chemical reaction occurred between the acid and the chlorophyll, that chemical reaction caused the broccoli to turn that yucky olive green color. When baking soda (the base) was added to the water to cook the broccoli the broccoli became mushy, why? The baking soda destroyed the cell walls of the plant (broccoli) causing to to become very mushy.  Nothing happened to the broccoli cooked in the saucepan with just water because water is neither an acid or a base.  It is a neutral property.

Experiment 4

Question: How do you Turn Milk into Glue

We can drink milk, pour it into our cereal and use it for many recipes, but have you ever thought you can use it as glue? Now you can turn milk into glue with these two fun science experiments. Try them both to find out which one makes a better glue. Follow the step-by-step directions below to make your very own milk glue

Items needed:

1 1/2 cup milk

3 teaspoons of white vinegar

baking soda





Step 1: Pour your 1 1/2 cups of milk into the pan  over medium heat.  Let the milk heat up until it is warm (never leave children unattended while using the stove).

Step 2: Once the milk is warm add the 3 teaspoons of white vinegar.

Step 3: Over low to medium heat stir the mixture.  You will see milk lumps or curds start to appear.  This happens when the liquid and solids start to separate.

Step 4: Once you have a lot of lumps strain the liquid using a strainer.

Step 5: You should be able to mold the lumps into a ball.  It will be slimy.

Step 6: Put the lump back into the pan.  Add a tablespoon of baking soda and a small amount of water.

Step 7: Stir and heat the mixture on medium heat until it starts to bubble.

Step 8: Once the mixture bubbles remove it from the heat and let it cool.

Step 9: It should look like a thick paste, it not continue to add baking soda and water until it is a paste consistency.

Step 10: Try using it as glue.


How did this happen?  When you added the vinegar to the milk it caused a chemical reaction.  The milk separated into two parts the liquid and the solid (the milk lumps or curds) The curds or lumps are the milk protein called casein.  Casein is a long molecule that bends like plastic forming a natural glue. When you added the baking soda (a base) to the vinegar (acid) another chemical reaction took place.  The bubbles that you saw when the mixture was heating was the carbon dioxide giving off as part of the chemical reaction turning the milk lumps or curds into a sticky, paste glue.


No heat way to try this experiment

Items needed:

1/2 cup milk

2 teaspoons white vinegar

1/4 teaspoon baking soda

coffee filter

2 tall cups



rubber band


Step 1: Pour 1/2 cup of milk into one cup.

Step 2: Add 2 teaspoons of white vinegar to the milk and stir.

Step 3: Put the coffee filter loosely over the second cup and secure it with a rubber band. The coffee filter should be drooping a little in the center.

Step 4: Slowly pour the milk and white vinegar mixture over the coffee filter.

Step 5:  Let the liquid drip through the coffee filter.  This takes a while I actually let the mixture drip for about an hour so It was all out.

Step 6:  Once all the liquid is gone scrape off the milk lumps.

Step 7: Place the milk lumps (curds) into a bowl then add 1/4 teaspoon of baking soda. Mix well

Step 8:  The mixture should become sticky and paste like.  Try using it as glue.

Other Milk Glue Experiment Ideas:

Where you able to get glue from these experiments?  Which experiment worked?  Try changing the amount of milk or baking soda what happens?  Try using whole, 2% and 1% milk which one made the best glue?


What’s the Best Way to Pop your Popcorn? Fun Science Project for Kids

Popcorn is made from a special type of corn called popping corn.  The secret to popping corn is the water in the kernel.  So, what is the best way to get the best pops from your popcorn?  Try this fun experiment below to find out.
Remember always have adult supervision when using a stove.



Question: What is the best way to get the biggest pops from your popcorn? Does wet or dry popcorn pop best?
Materials: 1 1/2 cups of un-popped popcorn, cookie sheet, bowl, plastic ziplock bag, colander/strainer, frying pan, vegetable oil, 1 cup water


Pre-Heat oven for 200
Step 1: Pour 1/2 cup of the un-popped popcorn on the cookie tray.  Let cook in the oven for 1 hour.
Step 2: Pour 1 cup of water into a bowl.  Pour 1/2 cup of the un-popped popcorn in the bowl for 1 hour.  After 1 hour use a strainer/colander to drain the popcorn.
Step 3: Pour 1/2 cup of the un-popped popcorn in a plastic ziplock bag for 1hour
Step 4: After 1 hour all your popcorn is ready to be cooked.  Cook the three batches of popcorn separately (recipe below).
Step 5: Watch and record results.


Popcorn popping recipe:
Ingredients: 2 tablespoons os vegetable oil, 1/2 cup un-popped popcorn, frying pan, 3 bowls
Step 1: Place frying pan over medium heat for two minutes.
Step 2: Add 2 tablespoons of oil to the frying pan.
Step 3: Pour 1/2 cup un-popped popped corn in the frying pan, cover loosely with lid.
Step 4: When the popcorn starts to pop lift pan about 1 inch from burner and move back and forth.  Do this until you do not hear anymore popcorn popping.  It should take about 3 minutes.
Step 5: remove lid slowly. Pour popcorn in a bowl and let cool. Mark the bowl with which type of popcorn you used (dried in oven, water or ziplock bag)
Step 6: Repeat this for the other two batches of popcorn.


What Happened to the Popcorn?
Which way did you get the biggest popcorn kernels?  Which one was the smallest?  The popcorn that was sitting in the water should have made the biggest popcorn. This is because soaking the popcorn in the water gave the popcorn kernel extra water. The more water there is the more steam is created while cooking causing the popcorn to pop better.  The popcorn the was placed in the oven should have produced the smallest popcorn.  This is because the popcorn was dried out and lost most of it’s moisture.  The popcorn left in the ziplock bag should be average size and amount because it was not dried and no water was added to it.