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During the exam, you are permitted to access the formula sheet below ONLY in electronic format. Important: Please click on the formula sheet below (also provided on this page) now and keep it open in another tab/window  – DO NOT exit [x] that tab – until the end of the exam. OSCM373-Exam-1-Formula-Sheet I will keep the formula sheet open in a separate tab until the end of the exam.

A student did an experiment with ice. A beaker of ice was placed on a hot plate for 30 minutes and its temperature was recorded after every 5 minutes. The table below represents how the temperature and state of ice changes with time. Time from start (in minutes) 0 5 10 15 20 25 30 State of matter in beaker ice P water water water Q steam Temperature of matter in beaker (in ° C) 0 0 50 80 100 100 142 What do the labels P and Q most likely represent? (2 points)

An old theory about the creation of the universe has been replaced by a new theory. Which of these statements is correct about the two theories? (2 points)

Airplanes use 150,000 liters of fuel during a 10 hour long flight. An airplane took off with 24,090 kilograms of fuel in its tank. If 1 liter of jet fuel weighs 0.803 kilograms, which of these conclusions is correct about the airplane? (2 points)

The diagram below shows an incorrect model of an atom. What best describes a flaw in the model of the atom? (2 points)

The diagram below shows the electrons in two pairs of atoms. Which of these conclusions is most likely correct about the two pairs of atoms? (2 points)

Avoiding bias, increases reliability and is important to experimental data. A scientist is investigating the cause of an unusual color in the lake water of a specific location. Four residents of the location responded to questions asked by the scientist. The chart below shows their responses.   Questions Resident 1’s answer Resident 2’s answer Resident 3’s answer Resident 4’s answer Do you work at the coal mine near the lake? Yes No No Yes Do you use the lake water for daily chores? Yes Yes No Yes Is your family income affected by the presence of the coal mine near the lake? No Yes No Yes Which resident’s information is the least biased and the scientist most likely to get valid results? (2 points)

The table below shows the temperature of water in two bowls. Name of bowl Temperature of water in bowl Bowl 1 315 Kelvin Bowl 2 86 degrees Fahrenheit What is the difference between the temperatures of water in the two bowls? (2 points)

One group of students is investigating the properties of the bar magnet shown below. The students took a bowl of iron nails, plastic pieces, wood shavings, and paper pieces. The bar magnet was placed inside the bowl for some time and then taken out. Several iron nails were stuck on the bar magnet. The experiment was repeated by several students using different bar magnets. Based on the investigations, which of these theories would the students most likely propose? (2 points)

A pipe is used to fill a fish tank which can hold 30 gallons of water. The pipe supplies 58 liters of water per hour. If 1 liter of water is equal to 0.26 gallons of water, which of these conclusions is correct about the fish tank? (2 points)