Wood splints

The final step in the development of the modem match was the invention of the safety-type cardboard match ascribed to Joshua Pusey (1892), now called the book match. It dominates the American match industry and is gaining in popularity in other countries although it was rather slow in gaining acceptance because it was somewhat mote difficult to ignite than the wood-splint match. 

Spectra were obtained using a Digilab FTS-15E Fourier Transform Spectrophotometer. A NaCl crystal mounted in a heated cell (Model 018-5322 Foxboro/Analabs, N. Haven, Ct.) was placed in the infrared beam and the chamber allowed to purge for several minutes while the cell was brought to the desired temperature. The temperature of the cell was controlled using a DuPont 900 Differential Thermal Analyzer interfaced to the spectrometer cell. A chlorobenzene solution (ca. 10 by wt.) of the sample was then applied to the crystal using cotton tipped wood splint. 

Fasten the cap securely in place with wood splints and string or tape as illustrated in Figure 18. 

Materials test tube, test-tube rack, 10-mL graduated cylinder, hydrochloric acid, magnesium ribbon, sandpaper, cardboard, wood splint, safety matches... 

As the reaction appears to slow down, light a wood splint in preparation for step 6. 

Materials 150-mL beaker, stirring rod, liquid dishwashing detergent, calcium carbide, forceps, wood splints, matches, ruler about 40 cm long, rubber band, phenolphthalein solution... 

Use a rubber band to attach a wood splint to one end of the ruler so that about 10 cm of the splint extends beyond the stick. 

Materials baking soda, vinegar, 3% hydrogen peroxide, yeast, wood splint, plastic containers such as butter or cottage cheese tubs, lids, matches... 

Wood splints tend to be flat or flat on one side and slightly convex on the other. They are used to make mats, baskets, and furniture, usually in combination with other, more rigid materials. 

Wicker is a general term applied to anything woven from natural materials. It is usually used in reference to furniture made of thin woven plant materials, sometimes in combination with rattan or wood. Common materials include willow, seagrass, com stalks, palm frond ribs, and thin wood splints. 

When the zinc and HCI have reacted for approximately 1 min, bring a lighted, glowing wood splint to the mouth of the test tube. CAUTION Be sure the test tube is facing away from your face when the splint is brought near. Again record your observations. 

Material Five cylinders, glass plates, wood splint, balloons, combustion spoon, test tube, beakers, empty can with concentric hole of approx. 1 mm diameter lecture bottles of oxygen, nitrogen, carbon dioxide, hydrogen and butane gas, candle (tea-light), limewater. 

Procedure Fill the cylinders with the gases replacing the air, cover and label, (a) First place a burning wood splint in all cylinders and then a glowing one. 

Material Two 100 ml syringes, combustion tube, glass tub, small cylinder, glass plates, wood splint, glass cylinder with combustion spoon and stopper, ruler steel wool, phosphorus. 

Material Gas generator, two syringes, two quartz combustion tubes, burner, small gas jar with glass cover, glass bowl concentrated ammonia solution, sodium hydroxide, pieces of nickel wire, copper oxide (wire form), wood splint. 

Observation (a) From 50 ml gaseous ammonia, 100 ml colorless gas is formed mixture of hydrogen and nitrogen, (b) By leading the gas mixture over heated black copper oxide, red-brown shiny copper is formed condensation of water is observed, approximately 25 ml of gas remains. This gas immediately extinguishes the flames of the burning wood splint nitrogen. 

Heating potassium chlorate produces oxygen, which supports the combustion of wood splint. 

FIGURE 4.12 (a) On heating, mercury(llj oxide (HgOj decomposes to form mercury and oxygen. (bj Heating potassium chlorate (KCIOsj produces oxygen, which supports the combustion of the wood splint. 

Light a wood splint with a match. Dispose of the match as directed by your teacher. Allow the wood to burn for 5 s, then blow out the flame to leave a glowing ember. 

Inquiry Why did you wait before using the wood splint Design an experiment to determine if the results vary over time. 

Commercial tannins, hquid flavoring and toasted chips lack almost all of the most volatile compounds, with the exception of eugenol and isoeugenol. Other additives, such as toasted wood splints, granules and chips release furfural, methyl-furfural and hydroxymethyl furfural into the wine. Another compound derived from non-toasted European oak is octanal, which has an orange odor (Bertrand et al., 1997). Octanal may contribute to... 

Increasing the number of collisions speeds up the reaction rate. The more reactant molecules there are colliding, the faster the reaction will be. For example, a wood splint bums okay in air (20 percent oxygen), but it burns much faster in pure oxygen. 

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