Homemade Lava Lamps: Chemistry in Action!

Creating your own lava lamp at home is not just a fun craft activity; it's also a fascinating exploration of chemistry in action! To make this captivating project, you’ll need a clear bottle or jar, water, vegetable oil, food colouring, and a fizzy tablet, such as Alka-Seltzer.

Start by filling your container about one-quarter full with water. Then, carefully pour in the vegetable oil until it reaches the top. You'll notice that the oil floats above the water – a perfect illustration of density in action! Next, add a few drops of food colouring; when it meets the water, you’ll see vibrant blobs that sink to the bottom.

The real magic occurs when you drop in a fizzy tablet. As it dissolves, it releases carbon dioxide gas, creating bubbles that carry the coloured water up through the oil, mimicking the mesmerising effect of a traditional lava lamp. And just like that, you’ve turned a simple kitchen experiment into a captivating demonstration of chemical reactions, density, and immiscibility, all while enjoying a visual spectacle that’s both educational and entertaining!

How to Make Slime: 3 Recipes Everyone Should Know

Slime-making is a delightful activity that can spark creativity and provide hours of fun for children and adults alike. Here are three simple recipes to get you started on your slime-making journey.

1. Basic PVA Slime

Ingredients:

• 150ml PVA glue (clear or white)
• 1 tsp baking soda
• 50ml contact lens solution
• Food colouring (optional)

Method:

1. In a bowl, pour in the PVA glue.
2. Stir in the baking soda until fully combined.
3. Add a few drops of food colouring if desired and mix well.
4. Slowly add the contact lens solution while stirring. The slime will begin to clump together.
5. Knead the mixture with your hands until it reaches your preferred consistency.

2. Fluffy Slime

Ingredients:

• 150ml PVA glue
• 1 cup shaving foam
• 1 tsp baking soda
• 50ml contact lens solution
• Food colouring (optional)

Method:

1. Combine the PVA glue and shaving foam in a bowl, mixing until smooth.
2. Stir in the baking soda.
3. If using, add food colouring and mix until evenly distributed.
4. Slowly incorporate the contact lens solution, mixing as you go. The slime will start to form and become fluffy.
5. Knead the slime until it reaches the desired texture.

3. Glitter Slime

Ingredients:

• 150ml PVA glue
• 50g glitter (any colour)
• 1 tsp baking soda
• 50ml contact lens solution

Method:

1. In a large bowl, combine the PVA glue with the glitter. Mix thoroughly.
2. Add the baking soda and stir to evenly distribute.
3. Pour in the contact lens solution, mixing continuously. The slime will begin to solidify.
4. Knead the mixture with your hands until fully incorporated and stretchy.

Each of these slime recipes allows for endless variations — experiment with different colours, textures, and additions like beads or foam balls. Enjoy the gooey fun while exploring the science behind slime!