Article: Objectives are often obvious, but it is good to have a concrete goal in mind when you conduct an experiment. In this case, you want to demonstrate the concept of solubility. The term "solubility" refers to something's ability to dissolve completely in a liquid. Although a salt and sand experiment is generally pretty simple, you'll find you get more satisfaction by going through the paperwork. An experiment is nothing without a critical eye. Making a habit of note taking during experiments will enrich the experience. You'll notice things you might otherwise overlook. Even obvious things should be written down. That way, you'll be able to make sense of it later. Observe the basic movements and changes in the experiment. Make note of the following.  Although the salt dissolves in the heated water, the salt remains intact. The salt needs the water to be heated before it dissolves. The salt doesn't boil away with the water. By discussing an experiment in a group, you'll be able to compare your observations. If this experiment is happening in a class setting, it's possible that one of the experiments will turn out differently than the others. While this is likely a result of error, it's still interesting to see a new result and figure out where it came from. If you're by yourself, checking out a recording of the experiment on a streaming site like YouTube can be interesting. Even if you know the result, it is nonetheless worthwhile to see how someone else went about it. Once you do the basic experiment, you should think of other questions you'd like to see answered. For example, how much longer does the process take if the portions are made unequal? Separating sand and salt is a very basic experiment, but the possibilities for a budding scientist are endless.  For a lot of homebrewed experiments, baking soda is very fun to play around with. You could try adding that to your mixture next time.  Doing this as part of a group is more enjoyable than doing it on your own.
Question: What is a summary of what this article is about?
Outline an experimental objective. Make observations. Discuss the experiment. Expand upon the original experiment.

Problem: Article: Remove the guitar strings and then unscrew the neck of the guitar from the body with a Phillips-Head screwdriver. Once the body is standing alone, unscrew the screws and knobs on the front of the guitar. Remove the screws on the pickups and bridge of the guitar. If there is a faceplate over your volume knobs, you'll have to remove the plastic portions of the knobs before you can lift the faceplate off. Once all of the screws are out on the face of the guitar, you can lift up your bridge and pickups, which are connected by wires. Snip these and solder them later when you put your guitar back together. If you feel unsure about taking your guitar apart, take it to a guitar store so that they can safely do it for you.   Make sure all the electrical wiring is removed from the guitar before you start painting it. Set your heat gun or hairdryer to the lowest setting and move it back and forth, across the body of your guitar. The heat from your hairdryer or heat gun will soften the finish on your guitar and make it easier to lift up the paint. Continue heating the paint for five minutes and then use a putty knife to poke at the paint. If the paint feels soft, you can go onto the next step. Do not hold the heat gun in one spot for too long or you may burn the wood that's under the paint. Start by scoring a small location on the softened paint. Use your putty knife to lift off the old finish and don't worry if it cracks off. Continue to scrape the paint and remove the old finish without damaging the wood under it. If the paint isn't coming off, use the heat gun again to soften it. Once you're done removing the finish, you should see the wood grain under it. Use a 100 grit sandpaper and sand over the surface of the guitar's body in the direction of the grain. Sand down irregularities so that the body of the guitar is as smooth as possible. Follow the contours of the guitar and sand the sides and edges of the guitar as well. Once you've sanded it with the 100 grit sandpaper, you can move to a 200 grit sandpaper to sand out smaller irregularities. Use a sanding block if the sandpaper is hurting your hands. As you sand down your guitar, you're likely to find bumps or divots in the body. Purchase an automotive filler online or an auto shop and follow the instructions to create the sticky substance. Use a plastic scraper to scoop up some of the filler and spread it over the divots in the body of the guitar. Once the divots are filled, let the filler dry for at least 20 minutes. Bondo is a popular type of automotive filler. Once you've filled in all divots and the guitar is relatively smooth, you'll have to do one last sanding with the 100 grit sandpaper. Continue to sand until the automotive filler lies flush with the body of the guitar. Don't saturate the wood grain on your guitar to prevent moisture from getting absorbed into the guitar. Take a microfiber cloth or a clean rag and wipe over the surface, making sure to remove any sawdust or debris that might be on the guitar. Debris or dust left on the guitar will get sealed into the paint job.
Summary: Remove your guitar strings and the screws in the body of the guitar. Remove the electrical components connecting the bridge and pickups. Heat the old paint with a hairdryer or heat gun. Lift off the old paint with a putty knife. Sand the body of the guitar. Fill any holes with an automotive filler. Sand the automotive filler so it lies flush with the guitar's surface. Dust the guitar with a dry rag.

The heat will help solidify the foam. Do not microwave the jar with the lid on, or you may ruin your microwave. Add a sprinkle of some cinnamon or cocoa powder on top of the foam. For something sweeter and fancier, add a drizzle of caramel or chocolate syrup instead.
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One-sentence summary --
Open the jar, and microwave it for 30 seconds. Add some garnish, if desired, and serve.