The Science Of Art - Journal

Salt     tea      calico         I wonder what would if I wash it in hot soap and water.


Salt       tea    cotton ball   I wonder how long it is going to take for the cotton ball to dry and for the dye to fully set in.

Salt      tea     string           I wonder if it well remain the same colour in the sun.

Baking soda   tea   calico   I wonder if the calico can take on board any more dye.

Baking soda   tea  string    I wonder if  it would be strong enough for a bracelet.

Baking soda   tea  cotton ball  I wonder if this could be used in a market as a neckless but would it be stronger enough?


Vinegar calico       tea         I wonder if it would be safe to make a mask out of it.

Vinegar cotton ball      I wonder why it smells so vinegary?

I predict:

I think when we put  a clean cotton bud  that the colours well mix in better and there is not much orange so you well see more orange.

I See:

That was nothing like I thought, that was amazing with all the colours one tap with dish washing liquid all 

the colours just changed and were moving by them self. The were doing bouncers movements  but they were going so fast. THey were moving blending like a rainbow swirl.

I Think:

That it a chemical reaction between the all three. So they react and move around.

I think if I did it again I would put more food die in.

We used the same dye but the one with mordant didn't stick and turned brown.











Tuesday 30th July 2013

Colour Changing Milk

EXPERIMENT

1. Pour enough milk in the dinner plate to completely cover the bottom to the depth of about 1/4 inch. Allow the milk to settle.
2. Add one drop of each of the colours of food colouring to the milk. Keep the drops close together in the center of the plate of milk.
3. Find a clean cotton swab for the next part of the experiment. Predict what will happen when you touch the tip of the cotton swab to the center of the milk. It's important not to stir the mix. Just touch it with the tip of the cotton swab. Go ahead and try it.

I see...

I think...because

1. I wonder what will happen when... I place a drop of liquid dish soap on the other end of the cotton bud. Place the soapy end of the cotton bud back in the middle of the milk and hold it there for 10 to 15 seconds. 

I see...

I think...because

1. I wonder what will happen when... I add another drop of soap to the tip of the cotton swab and try it again. 
2. Experiment with placing the cotton swab at different places in the milk. Notice that the colors in the milk continue to move even when the cotton swab is removed. What makes the food coloring in the milk move?

This is what I changed...

1. Repeat the experiment using water in place of milk. Will you get the same eruption of color? Why or why not?
2. What kind of milk produces the best swirling of color: trim, whole milk, cream? Does the fat content of the milk affect the reaction?

The dish soap must remain the same in the experiment. Use the same brand for each trial and the same amount of soap. Use the same colors and the same amount of food coloring in each trial. Pour the same amount of liquid into the bottom of the dish. All of these steps ensure that you have standardized the conditions as much as possible and have isolated a variable--the one thing that changes in the experiment. In this case, the variable is the type of milk you are using. Take photos of the reactions (maybe even videotape the reactions) to document your discoveries and share at the science fair.