The nicest way is to use a Google account [free] , and upload your photos to Google+. If you use the standard filesize, all pix are free to store. Then use the Google+ Slideshow Feature, as you use the Google Cast Extension casting function.
Explain that water is made up of tiny particles, called molecules, which are too small to see. These particles are always moving, even in very cold water. Since water molecules move, the molecules help mix the food coloring. However, the color mixed faster in the hot water than it did in the cold.
Particle movement in solids is slower than movement in a liquid and gas, particles stay close together and vibrate in place. Particle movement in liquids is faster than movement in a solid but slower than movement in a gas, particles move more freely. Particle movement in a gas is faster than particle movement in a liquid or solid. Particles move fast in random directions, on account of little or no attractive forces. Hypethesize how you could change the viscosity of a cold liquid and explain why your idea would work.