In one sentence, describe what the following article is about: The American Dahlia Society suggests either drenching the tubers with a liquid fungicide such as Daconil or coating them with inexpensive sulfur dust before storing, in order to prevent fungal growth. The latter method involves mixing approximately three cups of vermiculite and a teaspoon of sulfur dust together in a plastic bag. The tubers are coated by placing them in the bag and shaking it up. However, this method may require some further experimentation by home gardeners in order to find the ratio that works best for them. Perfectly dry and fungicide-treated tubers can be stored in a box that is first lined with newspaper, then covered with peat moss. Layers of moss and dahlia tuber should be alternated until the container is almost full or all the dahlias are inside. They should be topped with a final layer of moss then covered with a layer of newspaper before the box is closed up. Dahlia tubers can also be stored in boxes or trays of dry mediums such as sand, compost, or potting soil. If one has different types of dahlia tubers, labeling the storage containers is recommended. At all stages of storage, keep the dahlia tubers at a temperatures between 40 and 45 Fahrenheit. Temperatures that are any colder may kill them. Stored dahlia tubers should be checked monthly and spritzed with water if the tubers seem to be drying out. If they are badly dried out, plunging the tubers into a jar of water may be necessary to revitalize them. During the monthly inspection, if gardeners spot any diseased parts they should cut them off and then disinfect the garden implement that was used. In the early spring, the containers can be moved under a window so that the plants are able to start growing, even if the temperatures are not yet warm enough for them to be safely moved outside. Plant your overwintered dahlia tubers back in the garden in the spring, one or two weeks before the last expected hard frost.
Summary: Coat the tubers with a fungicide before storing. Pack the dried tubers into a box. Store the tubers at a temperature between 40 and 45 F. Check the tubers monthly for signs of dryness or disease. If you live in a very cold area, consider storing the tubers in large containers.Those living in areas with very cold winters may want to store their dahlia tubers in large containers that are suitable for holding full-size plants. Replant the overwintered bulbs before the last frost.

In one sentence, describe what the following article is about: When two atoms are bonded together, the difference between their electronegativities can tell you about the qualities of their bond. Subtract the smaller electronegativity from the larger one to find the difference. For example, if we're looking at the molecule HF, we would subtract the electronegativity of hydrogen (2.1) from fluorine (4.0). 4.0 - 2.1 = 1.9 Here, the electrons are shared almost equally. These bonds don't form molecules that have large charge differences on either end. Nonpolar bonds tend to be very difficult to break. This is because the atoms are sharing electrons, making their bond stable. It requires a lot of energy to break this bond. For example, the molecule O2 has this type of bond. Since the two oxygen's have the same electronegativity, the difference between them is 0. These bonds have more of the electrons at one end than the other. This makes the molecule a little more negative at the end with the electrons and a little more positive at the end without them. The charge imbalance in these bonds can allow the molecule to participate in certain special reactions, such as joining with another atom or molecule or pulling a molecule apart. This is because it's still reactive. A good example of this is the molecule H2O (water). The O is more electronegative than the two Hs, so it holds the electrons more tightly and makes the entire molecule partially negative at the O end and partially positive at the H ends. In these bonds, the electrons are completely at one end of the bond. The more electronegative atom gains a negative charge and the less electronegative atom gains a positive charge. These sorts of bonds allow their atoms to react well with other atoms and even be pulled apart by polar molecules. An example of this is NaCl (sodium chloride or salt). The chlorine is so electronegative that it pulls both electrons in the bond all the way towards itself, leaving sodium with a positive charge. NaCl can be broken apart by a polar molecule, such as H2O (water). In a water molecule, the hydrogen side of the molecule is positive, while the oxygen side is negative. When you mix the salt into the water, the water molecules break down the salt molecules, dissolving the salt. If there is a metal in the bond, the bond is ionic. If there are only non-metals, the bond is polar covalent. Metals include most of the atoms on the left side and the middle of the periodic table. This page has a table that shows which elements are metals. Our HF example from above falls in this range. Since H and F aren't metals, they have a polar covalent bond.
Summary: Find the electronegativity difference between the two atoms. If the difference is below about 0.5, the bond is nonpolar covalent. If the difference is between 0.5-1.6, the bond is polar covalent. If the difference is over 2.0, the bond is ionic. If the difference is between 1.6-2.0, check for a metal.

In one sentence, describe what the following article is about: Locate the gas main valve near your main gas meter, usually found on the side of your building or in a cabinet inside. Turn the valve so it's perpendicular to the gas pipes to turn it off. Stopping your gas main should also stop your pilot lights. Keep all of your windows and doors open if possible so the gas inside your home can escape. That way, there is a less dangerous concentration in your home and it's not as likely to spark or explode. Even when your windows are open, you shouldn't stay in your home until the gas leak is fixed. Anything electric creates a spark that could ignite a high concentration of natural gas. Avoid turning on any switches, electronics, or gas appliances while you suspect a leak. Avoid using lighters or anything with an open flame. Don't search for a gas leak with a flashlight or any other light source. Evacuate your home as soon as you can once you've determined there's a gas leak. Go across the street and away from your home in case of an explosion. Once you're a safe distance away, contact the fire department and let them know there is a gas leak. Don't use a landline or mobile phone while you're still inside your house.
Summary:
Turn off your gas line and pilot lights. Open the windows to vent your home. Don't use any appliances or electronics inside. Leave your home and call the fire department.