Table of Contents
- 1 Where did dyed water pass through the stem?
- 2 How do they make color changing straws?
- 3 Why does a straw looks bent in a glass of water?
- 4 Is salt water more dense than sugar water?
- 5 What happens when oil and food coloring mix?
- 6 How do you make dye in spray bottle?
- 7 How many cups are in a salt water straw?
Where did dyed water pass through the stem?
You’ll see the pale green leaves take on a reddish and bluish colour because the dissolved food colouring moves with the water through the xylem tubes into the celery stalk and leaves. The water evaporates through the leaves (transpiration) and deposits the colour in the plant.
How do they make color changing straws?
If the temperature drops enough, the thermochromic dye in the straw displays its color. The color change only occurs in straws that have come into contact with acetone. Liquid acetone evaporates very quickly, due to the relatively weak intermolecular forces that exist between acetone molecules.
Why does a straw looks bent in a glass of water?
This is because the straw is not bending, but the light around the straw is bending due to refraction. Light refracts as it passes from one medium to the next because it travels at different speeds through those mediums. Light travels fastest through air, a little slower through water, and even slower through glass.
How do you do the water transfer trick?
Hold the cup with water up, using your pointer finger to keep the string at the bottom of the rim as you turn it towards the empty cup. Pour the water slowly along the string… watch as it clings to the string and drips off the end into the empty cup!
Why plasma is straw colored?
Plasma is the straw-colored liquid portion of blood that contains water, proteins, salts, nutrients, hormones, and metabolic wastes. It does not have any pigment cells to give it a colour. But such pigments are absent in plasma, giving it a straw color.
Is salt water more dense than sugar water?
Here’s why: Salt is about 25% more dense than sugar. Therefore a teaspoon of salt weighs more than a teaspoon of sugar by almost 25%.
What happens when oil and food coloring mix?
When you add the food coloring to the oil it will not mix. Once you add the oil to the water, the food colored droplets start to drop down since they are heavier than the oil. Once they drop into the water they start to dissolve and look like tiny explosions (or fireworks).
How do you make dye in spray bottle?
In the cup or container mix together 3 Tbsp of urea, 1 tsp soda ash, and 1 cup warm water. Stir until dissolved. In your spray bottle add dye powder and just enough plain tap water to wet the dye. This will help dissolve the dye so clumps don’t clog up the spray bottle.
What happens when you put water in a straw?
This imbalance causes more water to be pushed into the straw. The water will rise until the pressure created by the water column in the straw equals the air pressure difference. Remove more air, and a bigger difference in air pressure will cause the water level to rise even higher into the straw.
How tall does a straw have to be to drink water?
As soon as the water reaches the height of your mouth, you can drink. Your lung power determines how much air you can remove. Some will have difficulty with a three-foot straw whereas others can successfully drink standing eight feet above their drink! There is a limit though.
How many cups are in a salt water straw?
Add red to cup #1, red and a yellow to Cup #2, yellow to Cup #3, yellow and blue to Cup #4, blue to Cup #5, and blue and red tablet to Cup #6. Carefully transfer the liquids to the six tall containers like Baby Soda Bottles, and place them in order from #1-6.