Today Science Sparks brings you lots of fun and deliciously spooky science experiments. Some of these you might have seen recently, some are from last year, and all are a lot of fun! Do let us know how you get on.
First up is how to make your own fake blood. This would be perfect to use with fancy dress costumes or just for some imaginary fun.
Then our spooky lava lamps. These are super simple to make, you could even add some glitter for a bit of sparkle.

Followed by some creepy density jars. We had so much fun with this one. Can you think of spooky things to float on the different levels?

Would you like to scare your friends with some spooky noises? Try an eerie sound device. Again, this is very simple but very effective. Who would you like to scare?

We love goo or oobleck here at Science Sparks, and this glow in the dark version is especially spooky!
How about setting up a creepy monster tea party, and learning about baking soda reactions at the same time?

We even have some great ideas for learning as you carve a pumpkin.

Find out what your spine looks like with as part of a skeleton model.
Finally, how about exploring magnetism with a spooky ghost?
See here for a more recent round-up of even more fun Halloween Science for kids.
What are your favourite Halloween activities?
Last Updated on May 10, 2023 by Emma Vanstone
Jayne says
I'm so looking forward to Halloween this year and the experiments look amazing! I can't wait to try some of them with Sausage.
ScienceSparks says
Let us know how you get on 🙂
Pinkoddy says
Great experiments as always - thanks for sharing 🙂
ScienceSparks says
Thanks. x
JDaniel4's Mom says
These all look lie eerie fun!
ScienceSparks says
They are!
maggy, red ted art says
Oooh gouhlishly perfect. You are clever!! Love them all!
Thanks for sharing on Kids Get Crafty!
Maggy
ScienceSparks says
Thanks Maggy!
Liz Burton says
Must try the spooky sounds cup - that sounds great!
Alexander Residence says
I love these, I really should visit more often, I know some kids who would love these! It's great to think of stuff other than craft and food for Halloween!
Johnson Babies says
Loving the look of the lava lamps!
Debs says
Ooh, I really want to try these.. perhaps in the non-spooky way, but I totally want to do them! lol Thanks for sharing!
Alison says
These look fun and I am sure my son will enjoy them 🙂
Artchoo! says
These are just plain awesome! Great ideas for Halloween- I can't wait to dig into the fake blood-making. Our house will look like a horror movie set.
ScienceSparks says
So glad you like them x
Isil says
Sounds fun!
Carrie says
What fun experiments!! Thank you for sharing at Sharing Saturday!
Trisha @ Inspiration Laboratories says
Science is always extra fun around Halloween. Thanks for sharing this awesomeness at the Sunday Showcase! I've pinned it to our feature board. 🙂
Jill says
These are fab! Will pin these for future reference as my son is a little young still but I'm sure they'll be really popular for Halloweens to come!
ScienceSparks says
Awww thanks, so glad you like them. x
Ross Mountney says
Such a brilliant site - thanks for sharing your expertise. I'm going to share it round the home school community as I'm sure they'll find it a valuable resource. BWs
ScienceSparks says
Thank you.
Solar Power says
Yaa this is wonderful science experiment. Thanks for sharing it with us.
Mumsmoments says
What fab ideas! This is going to keep the kids busy over half term.... Thanks
ScienceSparks says
Glad you like them x
Lulastic says
THESE ARE SO CLEVER! Can't wait for Ramona to grow up soe she can appreciate goriness 🙂
ScienceSparks says
Thank you. x
Becky says
I love these!!! I have 4 kids ages 5-9 who LOVE experiments. Thank you so much for sharing- this is such an awesome web site:).
Deceptively Educational says
Thanks for sharing this at the After School Linky! My boys would LOVE these experiments! I'm sharing this on my blog at tomorrow's link up.
Anna@The Measured Mom says
Love these fun science ideas! I'm featuring it as part of my Halloween round up today.
Kim @ The Educators' Spin On It says
Thanks for sharing in the After School Linky Party! You've been featured this week in a Roundup of Halloween Activities!
Solar says
I found a project to my kid for this Halloween.Thanks for sharing.
Sura says
Thanks for sharing the project. We can do it for my son. Greetings from : Green Home Solar
Paul says
We will try in our house. Thanks.
Natasha Thomas says
Thanks for sharing this amazing post.
Alesia - PrimaryLearning.org says
Such great experiments! Thank you, I'll share on my facebook page.