Can you answer these in the past tense for me. 1. Draw a horizontal pencil line about 1.5 cm from the bottom edge of the chromatography paper. this is origin.
2. Apply the screened methyl orange to the pencil line using the capillary tube as follows.
3. Touch the capillary tube to the surface of the screened methyl orange so that only little is drawn up the tube and apply the dye to the paper using a quick touch. when the spot is dried apply some more of the dye and dry again. The spot should no longer than about 0.5 cm diameter.
4. Pour about 20cm of distilled water into 250cm beaker and cover it with a piece of aluminum foil. place the chromatography paper into the beaker folding it over the edge of the beaker.
5. Allow the water to rise up the paper until it reaches the top of the beaker.
6. Remove the paper from the beaker and dry it in a stream air. mark with a pencil the position of each component and distance the water from the origin(the solvent front).

​

The answer to your question really depends on three things: how much water you have, how cold it is to start out, and how cold the things around it are. water actually freezes when it gets to 32 degrees fahrenheit (0 degrees celsius), but the time it takes to get there may be different.  let's start with the first. if you take two glasses, and fill one with a tiny bit of water, and the other about halfway, then put them both in the freezer, the one with less water will freeze first (you can try this at home, but i recommend using plastic cups and not glass ones).  now let's move on to the second part. let's say you have two glasses, and you fill one with really cold water that has been in the refrigerator, and the other with really hot water from the sink. if you put both of them in the freezer, the one that started out colder will freeze first.  for the third part, let's imagine that you have two glasses with the same amount of water in them, and the water is at the same temperature. imagine putting one outside on a really really cold day in georgia, and having a friend in alaska put one outside on the same day. since it would be so much colder in alaska, the glass of water there would freeze before yours.  so, if you took a tiny bit of really cold water in a glass, and put it outside on a cold day in alaska, it would freeze a lot faster than a big glass of hot water outside on a cold day in georgia.