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We made some crystals at school and we found out that the hotter the water is the more bigger and faster the crystal will grow.
It takes a long time for crystals two grow. It depends on which crystal you want to grow.

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I know we did an experiment on making crystals at school.

I wonder if it will be similar to the experiment that we did or not?

In the experiment we did it was a bit dangerous so will the crystal garden be dangerous or not?

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I predict that the crystals will be delicate when we create them

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This is the link to my one.

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To make crystal

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Any exploration of science for kids is not complete without growing some crystals....am I right? In fact, at the science fair this past year crystal growing projects were the project de jour, and I can understand why, growing a Crystal Garden has ranked pretty high up there on my list of fun science experiments since I myself was a kid!

Now one of the big drawbacks to many crystal growing projects is the time involved. I'll be honest, I am not a patient woman and though I proselytize patience to my kids, I'm not a very good example of this virtue! So days of waiting for a crystal garden to grow pretty much sent this idea to the "someday" list. That is until I discovered Epsom salt crystals....leave them overnight and wake up to magic! Oh how much do I love thee Epsom Salt!

Grow crystals overnight in your refrigerator! Click To Tweet

To be fair, growing crystals using Epsom salt will not yield giant geodes bursting with color; Epsom salt crystals are small, delicate, and slivery. Instead of one or two mega crystals this science experiment for kids will give you hundreds of miniature crystals, they look a little bit like shards of glass and if you're lucky you may get a few that look like snowflakes...We experimented quite a bit with this project to get good results and despite repeating the process exactly the same we had about a 70% success rate with crystal growth each batch we made. So plan on making 3-4 crystal gardens in case 1 or 2 don't grow. Another upside to making a few gardens at once is seeing how differently they grow, some crystal gardens were delicate and lacy, other were more rocky and gem like. Be sure to make a bunch to delight you and the kids!
This post contains affiliate links to products I love and recommend to my readers.
Materials

Instructions

Step One | Measure You will be using a ratio of 1:1 water to Epsom Salt for this project. Add 1 cup of Epsom salt to your jar/votive. If you are working with larger jars feel free to add more salt but be sure to make a note of how much so you can add the same amount of water.

Step Two | Heat the Water Add 1 cup of water to a microwave safe bowl. Heat the water in the microwave for 45 seconds. Alternatively use very hot tap water and skip the microwave.

Step Three | Add Color If you are using color, add a dash of liquid watercolor to the water. Stir.

Step Four | Combine Pour the water into the jar with the salt. Do this quickly so that the water is warm. Stir the salt and water for 1-2 minutes to dissolve the salt. We stirred for 2 minutes on most of our experiments. Don't worry if some of the salt remains undissolved at the bottom of the jar.

Step Five | Cool Place the jar in the back of your refrigerator. Alternatively, quick cool the mixture for 10 minutes in the freezer and then move it to the refrigerator. Cooling in the freezer first yielded crystal growth in 90% of our experiments. We had just a slightly lower success rate going straight from mixing to the fridge.

Step Six | Let 'em Grow Leave the mixture overnight in the fridge. Crystals may start forming in as little as 3 hours but we got the best results when we made the gardens in the evening and left them to sit undisturbed overnight Bonus: My daughter was excited to wake up and see how they had grown!

Step Seven | Result Time Carefully pour out the extra liquid. It's okay to leave a little liquid at the bottom of the jar. If you colored your water it will be hard to see if any crystals have grown until the excess liquid is removed. Clear water is easy to check.

Step Eight | Clean Use a wet paper towel to gently wipe away excess salt and color that may be on the upper portion of the jar. This will help you see the lovely crystal garden through the glass. Be careful not to damage any of your crystals!

You're done! Hand the kids a magnifying glass for additional exploration. My kids really wanted to touch the crystals. That's okay but let them know they are delicate and break easily.

Tips

Science for kids is not without trial and error! Here are some tips I learned after repeating this experiment over 20 times...

There will be duds. I did this experiment many, many times, mixing up some of the variables, but the only constant was that I always had a few instances where the crystal would not grow. I'm not a chemist and I'm sure there is a reason why one mixture grew and another did not despite me thinking I had done the exact same experiment....So hedge your bets and make a few of these at one time. UPDATE: A few scientists have replied to this post and recommend dropping a grain of sand in each batch. Crystals need something to grow on and one little impurity in the water like grain of sand will should help ensure they have a place to nucleate.

Don't overheat the water! I know it's tempting to really heat that water up to make the salt dissolve, but all the experiments we did with really hot water, heated more than 45 seconds in the microwave, failed miserably. Trust me, DON'T DO IT!

Stir for at least one to two minutes! This is tough one for littler kids. My daughter was done stirring within a few seconds but you really need to get that water super saturated with salt to make the crystals grow. The less dissolved the salt is the smaller the crystals will be and worst case they may not grow at all.

Let them grow even longer in the fridge. Leave them in the fridge longer than overnight and they should continue to grow. I left a few in the fridge for a over a week and the results got even better!

DO NOT let them sit in water at room temperature. Any crystals that have formed will deteriorate in the water at room temp. Once the crystals have formed and you want to preserve them you will need to pour out the water. I had some gorgeous crystals form in the fridge over the course of a week or so and I took them out and left them on the counter in the water. I came back the next morning to find they had flattened out. The one garden I poured the water out of remained stunning.

Make a Crystal Suncatcher with the leftover water!

Looks Like

Carlsbad Caverns. Have you been there? I was lucky enough to go there many, many years ago and it is as impressive and wondrous as you can imagine. I mean who wouldn't be floored by descending into a bat filled cave to see huge stalactites and stalagmites? If you are ever in south eastern New Mexico you must make a trip there! For more local sightings, those of you in California can visit Mitchell Caverns in the Mojave Desert.

Well that was fun, right? Here's a little something you can try with the leftover saturated water: Make Crystal Suncatchers:
Making Epsom Salt crystals is really simple and a great idea for a science fair project!
For more fun science experiment ideas for kids hop over here

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Any exploration of science for kids is not complete without growing some crystals....am I right? In fact, at the science fair this past year crystal growing projects were the project de jour, and I can understand why, growing a Crystal Garden has ranked pretty high up there on my list of fun science experiments since I myself was a kid!

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How to make borax crystals

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Easy to make crystals! Fun for a class project or for a decoration! Music By NCS: https://www.youtube.com/watch?v=p7ZsBPK656s

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You need food colouring to make the crystals a certain colour, otherwise they will just be plain white. You also need water and salt

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You need a base for the crystal to grow on.

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What you'll need:

String

Wide mouth jar

White pipe cleaners

Blue food coloring (optional)

Boiling water (take care or better still get an adult to help)

Borax

Small wooden rod or pencil Instructions:

1. Grab a white pipe cleaner and cut it into three sections of the same size.  Twist these sections together in the center so that you now have a shape that looks something like a six-sided star. Make sure the points of your shape are even by trimming them to the same length.

2. Take the top of one of the pipe cleaners and attach another piece of string to it. Tie the opposite end to your small wooden rod or pencil. You will use this to hang your completed snowflake.

3. Carefully fill the jar with boiling water (you might want to get an adult to help with this part).

4. For each cup of water add three tablespoons of borax, adding one tablespoon at a time. Stir until the mixture is dissolved but don’t worry if some of the borax settles at the base of the jar.

5. Add some of the optional blue food coloring if you'd like to give your snowflake a nice bluish tinge.

6. Put the pipe cleaner snowflake into the jar so that the small wooden rod or pencil is resting on the edge of the jar and the snowflake is sitting freely in the borax solution.

7. Leave the snowflake overnight and when you return in the morning you will find the snowflake covered in crystals! It makes a great decoration that you can show your friends or hang somewhere in your house.