Problem: Article: Any pan that is stove-safe will suffice. Transfer only the liquid solution. Do not pour solid baking soda into the boiling pan. You will only have solid baking soda if you added too much baking soda. The excess baking soda will remain in a solid (but wet) form. Put the boiling pan on the stove and bring the solution to a slow boil. Avoid boiling vigorously, as this will make it hard to monitor the surface of the solution, and could lead to over-boiling. You can also use a bunsen burner or hotplate to boil the solution. Be sure that the solution is at a light enough boil that you can monitor the surface of the solution. If it is boiling too vigorously for you to watch the surface, turn the heat down. Allow the solution to slow boil until you see a white solid start to form in the solution or on the surface. When you see this, remove from heat immediately and swirl the solution until the solid redissolves. As the solution cools, the sodium acetate dissolved in the hot water will precipitate out. It may take up to half an hour before you notice the formation of white sodium acetate crystals. Once the crystals form, you can pour off any excess water. If the crystals do not form, the solution may be resting in a supersaturated state. This means that there is excess sodium acetate dissolved in the water for its current temperature. Drop a small piece of metal (even aluminum foil should work) into the solution to start the crystallization. If you are building hot ice sculptures, you will want to pour the solution a little at a time into your mold or design. This should catalyze the sodium acetate to precipitate out of solution, and form a solid sculpture. The crystals will form on the surface of the dish. For the best yield, scrape them off with a razor. Collect the crystals in an airtight container (a ziplock bag is sufficient). If you plan to make a hand warmer, put the crystals in an airtight plastic bag. You can melt the crystals by dropping the bag into boiling water. Leave it in liquid form until you need a hand warmer, then drop a crystal or piece of metal in to catalyze the change back to a warm solid.
Summary: Transfer the solution to a boiling pan. Bring the solution to a boil. Watch the surface of the solution. Allow the solution to cool. Scrape the crystals off.

Problem: Article: Look for an open vs closed body posture. If she's squirming in her seat and angling herself away from you, she's creeped out. However, if she's relaxed and keeping her body posture open and facing you, she's probably a bit receptive. If she's keeping eye contact or making flirty eyes, she's probably receptive. However, if you see her occasionally looking towards the door, clock, or crowds of people, she's probably feeling trapped and looking for an escape. Break the tension by apologizing for bothering her and give her some space. She might very well relax enough to reenter the conversation. If she's giving short answers and seems to be trying to end the conversation then she's uncomfortable and you're probably not going to get anywhere. However, if she's giving longer answers or even asking you questions, then she's probably open to having a good conversation. If you see her flexing her hands, she's probably mad or offended that you're talking to her. If she's clutching her hands to her body or holding her purse tightly, she's at least uncomfortable. However, if her hands are relaxed and she's casually using them to talk, then she's more receptive to conversation. Sometimes a woman that seems receptive, friendly, or even flirty may quickly become closed and unsure. This is a natural emotional reaction to the course of the conversation and her own analysis of your interactions. If she's becoming uncomfortable, ease up. And remember: no matter how friendly or interested she seemed, it doesn't obligate her to give you her number or go on a date with you. Don't get angry if she says no.
Summary:
Look at her body posture. See where her eyes are focused. Listen to what she's saying. Analyze what she's doing with her hands. Remember that signals can be mixed.