Problem: Have you are burned something on the stove or in the oven? Do you know why things burn? It all has to do with temperature. Changes in matter are affected by temperature. For example, what if you place a cake in the oven and you leave it in too long? What do you think will happen? Thats right, it will probably burn. The same thing will happen if the oven setting is too high and you apply too much heat. In either case, heat has affected the rate of change in matter. Its probably obvious that when the temperature is increased a chemical change, like cooking, will occur faster. What about a physical change? Are physical changes affected by temperature? Most of us have seen steam rising off a wet road after a summer rainstorm. This happens because the road surface is very warm. The warm road and warm air temperature causes the water to evaporate quickly. The liquid water is turning into water vapor, but it is still water. The evaporation of water is a physical change. So yes, temperature affects the rate that physical change occurs.

Question: "What kind of changes can be caused by temperature?"

Answer: "Sound changes"
Answer: no

Problem: Hundreds of thousands of years before China was to become the world's longest-running civilization, the prologue was enacted by means of the flicker of a carefully tended fire. Peking Man, a forebear of Homo sapiens, achieved a mastery of fire. We might call it the first Chinese invention. Not that he devised flint and steel, matches, or any other way of creating fire. Peking Man simply learned how to capture flame, perhaps from a forest fire, and keep it alight. He thus enjoyed two revolutionary luxuries: light and heat. Technologically and sociologically, it was a phenomenal breakthrough: with fire, communities could live year 'round in one cave, in which cooking and even smelting could be pursued. And so, by 600,000 b.c., about 50 km (31 miles) southwest of present-day Beijing, the ancestors of mankind were ready to settle down. Several hundred thousand years later, when Marco Polo reached the capital of China, he was astonished by a further development in fire technology. The Chinese, he announced, used black stones dug out of mountains as fuel. Europeans did not yet have a word for "coal," nor had they discovered a use for it. The First Dynasty The confluence of mythology and history in China took place around 4,000 years ago during what is referred to as the Xia (Hsia) Dynasty. This was still the Stone Age, but the people are thought to have made silk from thread produced by the worms they cultivated on the leaves of their mulberry trees. And written language (which evolved as early as 4,500 to 5,000 years ago) was already in use, originally by oracles and then by official scribesChina's first scholars. During the second of the quasi-legendary dynasties, the Shang (from about the 16th to 11th centuries b.c.), the Chinese developed an interest in art. Careful geometric designs as well as dragon and bird motifs adorned bowls and implements. And with the arrival of the Bronze Age, the Chinese created bronze vessels of such beauty and originality that, until modern times, archaeologists refused to believe they were cast 3,000 years ago. The Shang Dynasty gave rise to the concept of one Chinese nation under one government.

Question: "What new fire technology astonished Marco Polo when he reached the capital of China?"

Answer: "The Chinese used black stones dug out of mountains as fuel"
Answer: yes

Problem: With a budget of $329 million, LSC provides civil legal assistance to low-income people in every county in America, Kleiman said. NLAP was created in 1968. A decade later, the agency used a $50,000 LSC grant to buy a building at 438 King St. in Charleston and $33,000 to buy a building at 201 King St. in Georgetown, according to Erlenborn's letter to Kaynard. In 1980, NLAP used $63,000 in LSC funds to buy property at 607 Main St. in Conway, the letter said. On Nov. 14, 2001, NLAP transferred title of the King Street building in Charleston to the Charleston County Bar Association, according to county property records. The local bar paid $5 for the building, which sits between a redeveloped office building and an antique shop. The local bar said it would maintain the building for "legal services to indigent residents of Charleston County and coastal South Carolina," the records said. The King Street building appears to be vacant. Notices at the entrance direct visitors to the equal justice center on West Montague Avenue in North Charleston. E. Douglas Pratt-Thomas, president of the local bar, was not available for comment. Charleston County has not appraised the King Street property because it is tax-exempt. But Randall Goldman, managing partner of Patrick Properties, which owns buildings from 440 to 456 King St., said he estimates 438 King St. would sell for between $700,000 and $900,000. "That building, which was purchased solely with federal legal aid dollars, should be used to provide legal services for poor people in South Carolina," Kleiman said. LSC wants the title to go to the equal justice center in Charleston or "we want 100 percent of the proceeds from the sale of the building to stay in Charleston. We are not contemplating taking that money out of South Carolina," he said. Kleiman said if the neighborhood legal program in Charleston "had honored their obligation, this would not be an issue."

Question: "How many years after buying buildings in Charleston and Georgetown did the NLAP buy again?"

Answer: "10 years"
Answer:
no