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Science Experiments: Solubility of Different Substances

Saturday, October 24, 2015

Mavi and I got the chance to work on some experiments last weekend due to bad weather.  First we started off with a simple test of which substance dissolves in water. 
Solubility TestB

Objectives:

  • Discovering which substance dissolves in water
  • Why the said substance dissolves faster in water

Materials needed:

  • salt, sugar, flour, chalk powder
  • 4 bottles of water
  • teaspoon
  • stirrer

Procedure:


Findings:
  1. Salt and sugar easily dissolved in water after stirring.  They have grainy texture and are crystalline thus making it more soluble in water.
  2. Flour and chalk powder partially dissolved, most of the powdered portion resided at the bottom of the bottles.  They have powdery and dry texture, thus making it hard to dissolve in water.
FOR OLDER KIDS
Now, for older children who can grasp complex explanation… I prepared a visual and hands-on demonstration for Mavi to understand how the substance are more soluble, partially soluble and insoluble.  Make sure though that when you try to discuss this with your kids, he/she is already familiar with the elements in the periodic table and can understand what “attraction” means, similar to the concept of magnetism.  The link I provided is the one where I introduced the Periodic Table to Mavi in a fun and interesting way.

Anyway, here’s how the chemicals of the substance interact to water when mixed.

SOLUBLE SUBSTANCE
I used plasticine to demonstrate the chemical composition of salt and water to Mavi. 
Salt is composed of: sodium (Na+) in green  and chloride (Cl-) in purple.
Water is made up of H2O, hydrogen (H+) in white and oxygen (O-) in red.
When mixed with water, the salt molecules are easily “attracted” to the water molecules.   It’s like the positive and negative attraction in magnetism (polarity).  Thus, sodium (Na+) is attracted to oxygen (O-), while chloride (Cl-) is heavily attracted to the two positively charged hydrogen (H+).
Because of the strong attraction between molecules in the two substances, salt is easily dissolved in water.
WaterandSalt

PARTIALLY SOLUBLE
For partially soluble substances, the molecules that made up the flour or chalk have weak attractions with the molecules of the water.  Thus some have dissolved but most of it didn’t and the result are the residues found at the bottom of the bottles.

INSOLUBLE SUBSTANCE
For insoluble substances (don’t dissolve in water) like oil, the molecular contents are NOT attracted to water.  This means they do not mix with water and if you combine them, you will definitely see the separation.

Though some advanced students can explain that this is because oil is a non-polar substance and can only be dissolved with another non-polar substance, the way I explained it to Mavi is that oil molecules are just so heavy that water molecules can’t “bond” with it.
Insoluble
This was a fantastic activity for both Mavi and I.  More experiments coming up!
So follow us on Facebook, Pinterest, Google Plus, Instagram or Twitter for updates!
And you might as well PIN this for reference. Thank you!
SolubilityofSubstance
3 comments
at 8:53:00 PM Labels: Chemistry, elementary, experiments, homeschooling, Mavi, science
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Continent Fact Cards Game and {Learn & Play Link Up}

Wednesday, October 21, 2015

Continent Fact Cards Game

Mavi can’t get enough of these facts cards from my Nutshell Geography series! He wants us to play this when in the car, or when we're walking home.  I would ask him a questions based on the facts and he’s going to tell me the continent or the country it’s connected to.  We developed a scheme of giving him 3 clues (mostly letters from the answers) and I am PROBIHIBITED to give the answer. It’s amazing how both Mavi and I enjoyed it.  So happy that we found a new way to use these cards!


These cards are from:

  • Asia in a Nutshell
  • Europe in a Nutshell
  • Africa in a Nutshell
  • South America in a Nutshell
Continue reading...
0 comments
at 9:40:00 PM Labels: continents, crafts, geography, learn & play link up
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Classifying Vertebrate Animals

Tuesday, October 20, 2015

** Contains affiliate links **

I love unplanned activities.  Mavi would always resort to this activity whenever he’s bored on Fridays (swimming lessons were moved to Saturdays).  I like that he can do this activity independently, while learning the important characters of animals that belong in each group.

Classifying Vertebrate Animals

I believe that it is important for the child to have a clear and defined idea of the classes in the animal kingdom and its division.  What’s important to me is to have him gain the knowledge through this activity rather than reading and memorizing the difference in the books.

Continue reading...
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at 10:45:00 AM Labels: animals, elementary, homeschooling, materials, Mavi, science, shop, zoology
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Exploring Fruits for Toddlers

Monday, October 19, 2015

Vito is 23 months old. 

** Contains affiliate links **

After, the zoo, farm animals and parts of the body, I decided to do a fruit unit for this little boy as he loves to name fruits whenever we are in the supermarket.  I like to come up with themed activities as it helps the child to expand their knowledge of certain objects and occasions, practice communication skills and improve their vocabulary.

FruitActivities

 

Beginning Sounds. We’re using Hape Lowercase Puzzle.

DSC_0072

Apple Prints. Color recognition and sensorial activity.

DSC_0102

Bagging Fruits. A practical life activity that develops hand/eye coordination, concentration plus helping Mommy tidy up!  We’re using Learning Resources Fruit Counters.

DSC_0116

Matching Real Objects with Pictures. Developing early discrimination skills (difference between objects), hand/eye coordination and concentration.  I made the fruit cards and you can get a copy from here or here.

DSC_0677

Fruit Color Sorting using a Tong. Improving fine motor skills, pincer grasp, concentration and color recognition.

DSC_0758

I love this tong from Ikea. 

DSC_0766

As of the moment, our color sorting activity involves two colors, but I introduce one (new) color at a time.DSC_0767

He’s seriously concentrating.  Goodness!

DSC_0787

Slicing a Banana. I was with him the whole time he’s doing this, reason why I don’t have an actual photo of the activity.  Another great practical life activity to introduce to kids.  This is an introductory activity of actual “slicing”, though we’ve done a lot of this using playdough.  He still has difficulty coordinating his hands.  We’ll get there though… need to practice more Smile

DSC_0064

And that’s about it! Thanks once again for taking time to read through the post.  Don’t forget to PIN this for your reference.

Fruit

Check me out on Pinterest for more toddler and themed activities.

1 comments
at 12:07:00 AM Labels: 18-24 months, early childhood, fruits, homeschooling, Montessori-inspired, practical life, totschool, tray works, Vito
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The Pinay Homeschooler is a participant in the Amazon Services LLC Associates Program, a program designed to provide means for websites to earn from the ads/promotion they create. We have included links to the products we used in our homeschool activities and if you buy via the links we may earn a small commission.

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