If you build a campfire, you start with a large stack of sticks and logs. As the fire burns, the stack slowly shrinks. By the end of the evening, all that is left is a small pile of ashes. What happened to the matter that you started with? Was it destroyed by the flames? It may seem that way. What do you think happened? The truth is that the same amount of matter still exists. The wood changed not only to ashes, but also to carbon dioxide, water vapor, and other gases. The gases floated off into the air, leaving behind just the ashes. Although matter was changed, it was not created or destroyed. Because the same amount of matter still exists, we can say that matter is conserved. You may wonder how it can be conserved if something is now missing? Assume you had measured the mass of the wood before you burned it. Assume you had also trapped the gases released by the burning wood and measured their mass and the mass of the ashes. What would you find? The ashes and gases combined have the same mass as the wood you started with. This example illustrates the law of conservation of mass.

Question: "Once a stack of sticks and logs is burnt what matter remains?"

OPTIONS:
- no
- yes

Answer: "Only the ashes,All other matter was destroyed"

Response: no

Roma captain Francesco Totti set a new Serie A scoring record on Saturday as his side demolished Cesena 5-1. Two early goals from the 35-year-old striker saw him reach a total of 211 goals for Roma, which means he has scored more goals for one club than any other player in Serie A history. His tally sees him surpass the previous record of 210 set by the prolific Swedish striker Gunnar Nordahl who played for AC Milan in the 1950s. "It's what I've always wanted, to wear this shirt and beat one record after another," said Totti, AFP reported. "I've overtaken Nordahl and I'm proud of that. Now I'm aiming for Altafini," he added, AFP reported. Brazilian Jose Altafini is the joint third highest scorer (along with Giuseppe Meazza) in Serie A history with 216 goals. Totti's early brace and a goal from Fabio Borini put Roma 3-0 up with only eight minutes played. Juan and Miralem Pjanic added further goals in the second half after CM Eder had pulled a goal back for Cesena on the hour mark. The win lifts Roma to sixth -- although Napoli will overtake them again if they win at Siena on Sunday -- and boosts their chances of qualifying for European football next season. Cesena, however, remain mired in trouble hovering just above the foot of the table in 18th place with 15 points.

Question: "How old is Francesco Totti?"

Response: "Almost 36"
OPTIONS:
- no
- yes

A: yes

Problem: The dermis is the inner layer of skin. The dermis has blood vessels and nerve endings. The nerve endings explain why your skin is sensitive. You can sense pain, pressure, and temperature. You cut your finger and it starts to bleed. What has happened? If your skin bleeds, it means you have cut the dermis layer and damaged blood vessels. The cut really hurts. It hurts because of the nerve endings in this skin layer. The dermis also contains hair follicles and two types of glands. Hair follicles are structures where hairs originate. Each hair grows out of a follicle. Hair passes up through the epidermis. It then extends above the skin surface. Oil glands produce an oily substance. The oil is secreted into hair follicles.

Question: "What is the last structure the hair passes through before extending above the skin surface?"

Answer: "The epidermis"

OPTIONS:
- no
- yes
Answer: yes

Question:
When single father Thurman Williams needed help filling out papers in a custody suit recently, he didn't look to his lawyer for help. He walked to a computerized kiosk at the Lamoreaux Justice Center in Orange and started tapping the keys. As part of a legal experiment, litigants without lawyers across California are using computerized video kiosks to prepare common court filings and seek basic legal advice. The kiosk used by Williams is part of a statewide effort to cope with a flood of litigants who cannot afford or refuse to hire lawyers. Court officials statewide fear the number of self-represented litigants has reached crisis levels and threatens to clog court calendars. Like Williams, more than 6,000 Orange County litigants have initiated court actions on I-CAN! kiosks or accessed the programs on the Internet, using home computers. Similar programs are operating in Sacramento, San Diego and Ventura. A recent study of the kiosks' first 18 months of operation concluded it is too soon to tell if the system will relieve pressure on court calendars. But the report, by UC Irvine's School of Social Ecology, said users were overwhelmingly positive about the free legal assistance. "It's made life a lot easier for me," Williams said. "It's helped keep me from going to the poorhouse." The 29-year-old Orange resident was directed to a kiosk in the Lamoreaux Justice Center by court staff. After putting on headphones and following the directions of a videotaped instructor, Williams filled out a quarter-inch stack of paternity and custody documents. The exercise took 20 minutes; it would have cost him about $800 if he had relied on a lawyer, he said. "It was a lot easier than I thought." Whether they can't afford a lawyer or just want to save money, more Californians are going to court without a lawyer. "I'm just amazed at the numbers," said Commissioner Salvador Sarmiento, who hears between 40 and 90 child-support cases a day in Lamoreaux Justice Center. After reading the above, is "To save money" the correct answer to the question "Why did Thurman Williams walk to a computerized kiosk at the Lamoreaux Justice Center in Orange and just start tapping keys, as oppose to finding a lawyer?"? OPTIONS:
- no
- yes

Answer:
no

At length, as I entered the pass, the huge rocks began to close around in all their wild, mysterious impressiveness, when suddenly, as I was gazing eagerly about me, a drove of gray hairy beings came in sight, lumbering toward me with a kind of boneless, wallowing motion like bears. I never turn back, though often so inclined, and in this particular instance, amid such surroundings, everything seemed singularly unfavorable for the calm acceptance of so grim a company. Suppressing my fears, I soon discovered that although as hairy as bears and as crooked as summit pines, the strange creatures were sufficiently erect to belong to our own species. They proved to be nothing more formidable than Mono Indians dressed in the skins of sage-rabbits. Both the men and the women begged persistently for whisky and tobacco, and seemed so accustomed to denials that I found it impossible to convince them that I had none to give. Excepting the names of these two products of civilization, they seemed to understand not a word of English; but I afterward learned that they were on their way to Yosemite Valley to feast awhile on trout and procure a load of acorns to carry back through the pass to their huts on the shore of Mono Lake.

Question: "How was he able to find that the mono Indians did not understand English?"

OPTIONS:
- no
- yes

Answer: "They told"

Response:
no