It was also the impetus behind SABIC’s purchase of a 25% stakein the Swiss specialty chemical maker Clariant, 50th on this list, earlier this year for $2.4 billion. Concrete floors should be cleaned at least once a year to keep them in tip-top shape. Yet only 40 years ago, a wine could be good one year and horrible the next. Step 2: Nail the pegboard to the stake so the top of the board is one foot below the top of the stake. Step 5: Keep a weather notebook. Keep your gas furnace running trouble-free. The compression ratio of your engine determines the octane rating of the gas you must use in the car. The focus of engine development here then, is on reliability, fuel efficiency, and torque rather than outright speed. You should also make sure the engine is cold before you start — spark plugs can get very hot! Make a scale on it by making a mark every 1/4 inch. Ceiling fans create cooling breezes, making a stuffy room feel pleasantly comfortable, but it’s essential to know how to clean ceiling fans for a few reasons. Ask them to turn their motors off while they wait, even if it’s only for a few minutes.

Eventually, you may have to repair it, but you shouldn’t need to do that for at least a few swimming seasons. Be sure to wear safety goggles and have an adult supervise. Have an adult help you dig a hole about 18 inches deep. Streptococcus and Candida may not be big threats if you have a healthy immune system. Both agreed there’s no hard-and-fast definition of similarity, if six chemists were asked about their opinion of the substantial similarity between two chemical structures, then six different answers may be offered. While mild peels generally aren’t very painful, it’s important to remember that your face may appear reddish for weeks afterward. Use wire to fasten a thermometer and rain gauge to the pegboard. Use your readings to track the weather. Get directions for this science project on the next page of science projects for kids: weather and seasons. Learn how to prepare this science project on the next page of science projects for kids: weather and seasons. Testing the Air is a science project that teaches kids how to measure environmental pollutants. In the first test, measure how much dust, dirt, soot, and other floating material is in the air. If you are dealing with stubborn dirt, however, you might need a second application to make the deck shiny and spotless.

Learn how to make a Weather Station with your kids so that you can measure and predict the weather. How can you tell if your piercing is infected? Step 1: With two simple tests, you can check the air for common pollutants. Step 6: Try both of these tests in two very different places to compare pollutant levels. You might try them in the middle of a city, then in a forest or in the country. Then fill it back in and stomp the soil down firmly. Fill it about 3/4 full of water. Wipe with a clean cloth dipped in a solution of washing soda or detergent and water. Mix dishwashing detergent in hot water and swish to create suds. We had already tried just using a simple combination of vinegar and water, but they learned a trick from a commercial window cleaner: add a little dish detergent to the vinegar/water mixture. Can white vinegar clean canvas shoes? Step 4: Examine both cardboard squares with a magnifying glass and see if you can count the number of small particles sticking to them.

Step 3: Cut a strip of paper about four inches long. Tape this strip of paper to the bottle with the halfway mark at the same level as the water in the bottle. Once the bottle top is under­water, you can take your hand away. Our cleaners are on hand for any reasonable cleaning request and will endeavour to fulfil it within the time allotted. Ask your parents not to idle their cars for long periods of time at a drive-through bank, dry cleaner, or restaurant. You can set-and-forget this model on a daily cleaning schedule without worrying about it for 30 days at a time (or 60 if you forego the mopping function). Then you can see yourself that the air pressure is high. How clean is the air around your home? Let our Cleany team prepare your new home and make it fantastic. This effect is most likely an evolutionary development designed to keep people alive in times of famine so they could make it through the food shortage, start eating again, and reproduce. Halfway down the strip, make a longer line to show the halfway mark. Other chemical reactions result in black spots and fogging (a white and blue-tinted haze) that can cause the image to deteriorate from beyond recognition to no longer visible, or completely obscured.