Introduction to General Organic and Biological Chemistry Exam 2025

Introduction to General Organic and Biological Chemistry Exam 2025 What is the correct scientific notation for 200,000? - Correct Answer-2 x 10*5 What is the correct scientific notation for 10000? - Correct Answer-1 x 10*4 What is the meaning of 4.32 x 10-2? - Correct Answer-0.043*2 What is the meaning of 4.32 x 103? - Correct Answer-4320 Arrange the following values from smallest (top) to largest (bottom) - Correct Answer 10*-5, 10*-3, 10*-2, 1, 10*1, 10*4, 10*6 Select the appropriate value for each part of the equation. - Correct Answer-3.4 feet * 12 inches/ 1 foot= 40.8 inches Is the measurement quantitative or qualitative? - Correct Answer-Quantitative- The patient weighs 150 lbs., The patient's fever is 38.1 C Qualitative- That object is beautiful, That shirt is orange, The patient's pain level is 5 Determine if the measurement is metric or English. - Correct Answer-Metric- Add 25 g of salt, The patient is 130 centimeters tall, Walk 500 meters English- The patient weighs 150 pounds, Add one cup of sugar to the solution, Walk 500 miles Match the unit to the measurements. - Correct Answer-Length- Meters, Feet Volume- Liters, Cups Weight/Mass- Grams, Pounds Calculate the density of solution A if its mass is 10 grams and its volume is 15 mL. - Correct Answer-0.67 g/mL Which would have the most mass, and consequently the higher value: an ounce of gold, a pound of gold, or a kilogram of gold? - Correct Answer-a kilogram of gold How many inches are in 1.3 yards? - Correct Answer-46.8 inches Organic Organic Organic Calculate the volume of a solution that has a density of 1.5 g/mL and a mass of 3.0 grams. - Correct Answer-2.0 mL How many cups is 150 mL? - Correct Answer-0.625 c 10*3 represents _________________ and is __________________ 10*-3? - Correct Answer-one thousand, larger than Rank the following values of length from smallest to largest. - Correct Answer-1 mm, 1cm, 1 inch, 1 foot Select any quantitative measurements? - Correct Answer-The lemon weighed 4.5 oz. The temperature is 98.6 ⁰F The pitcher was 15.0 cm tall Which of the following is NOT part of the scientific method? Benchmarking Results Hypothesis Experiment - Correct Answer-Benchmarking What is the purpose of a negative control? To provide a point of comparison To disprove the experiment To disprove the hypothesis To act as an unknown - Correct Answer-To provide a point of comparison Before we continue on with the next steps of the scientific method by continuing to look at this real world situation, try your hand at formulating a hypothesis based on the following situation: The premium gas at the pump is more expensive and you wonder if this gas will improve your gas mileage. Possible hypothesis: The premium gas will improve the performance of your car. The premium gas will improve the gas mileage of your vehicle as compared to standard unleaded gas. The premium gas is more costly I wonder if the gas will make my car go further. - Correct Answer-The premium gas will improve the gas mileage of your vehicle as compared to standard unleaded gas. Does the data in the table support our hypothesis? Planting marigolds within two feet of lettuce will reduce the amount of lettuce being chewed on by rabbits. - Correct Answer-Yes What would be an appropriate interpretation of this data? Flashcards should be used for all subjects in all classes to improve grades. Organic Organic Group 1 students were more intelligent overall than group 2 students. Flashcard appears to assist in retention of chemistry terminology. Students that used flashcards tended to perform more poorly on terminology questions. - Correct Answer-Flashcard appears to assist in retention of chemistry terminology. What would be the negative control in this study? Group 1 The % of students that did not answer the questions correctly A result not supporting the hypothesis Group 2 - Correct Answer-Group 2 Does this data support the hypothesis? Yes No - Correct Answer-Yes Put the steps of the scientific method in order from start to end: - Correct Answer Observation Hypothesis Experiment Results Interpretation/Conclusions You observe that your milk is going bad quickly in the refrigerator, which is currently set to 40 F° and think that this may have something to do with the refrigerator temperature. What would be a hypothesis you could test to learn more about this situation? - Correct Answer-Milk stored at 34 F° will last longer in the refrigerator compared to milk stored at 40 F° An experiment is performed on the effect of peanut consumption on blood pressure. In this experiment, a group of 50 students is given one packet of peanuts to eat each day and then their blood pressure is taken after 1 month. What would be a negative control we could add to this experiment? - Correct Answer-We add a group of students that does not eat peanuts for the duration of the study. You have just read a claim in a local newspaper that blackberries are an effective treatment for arthritis. You should as a scientifically literate person: - Correct Answer Search for an article on this topic in a peer reviewed journal and look at the data In an experiment on the effects of fertilizer on rose production you look at the effects of Cycon brand fertilizer as compared to a crop with no fertilizer. In this experiment, you keep the soil, water, sun exposure, and type of rose consistent for all groups. Why did you hold the soil, water, sun exposure, and rose type constant? - Correct Answer-To act as experimental controls Which of the following is not an example of matter? Water Organic Organic Oxygen Radio waves Gold - Correct Answer-Radio waves Which of the following would be considered an element? Water Glass Wood Iron - Correct Answer-Iron Which of the following would not be considered a subatomic particle? Electron Neutron Proton Molecule - Correct Answer-Molecule This particle has a charge of -1 and is transferred or shared in chemical reactions. Nucleons Electrons Protons Neutrons - Correct Answer-Electrons Sort the following into the categories of substance versus mixture. - Correct Answer Substance- Element, Compound Mixture- Heterogenous, Homogenous Sort the following: - Correct Answer-Pure Substance- Aluminum, Baking Soda, Water, Neon Mixture- Air, Steel, Milk, Salsa, Paint Sort these items: - Correct Answer-Element- Iron, Hydrogen Compound- Salt Homogenous- Air, Sugar Water Heterogenous- Soda Match the feature with the type of particle. - Correct Answer-Proton- Mass of 1 AMU, Charge of +1, Determines atomic number Neutron- Mass of 1 AMU, Charge is 0 Electron- Charge is -1, least massive of the subatomic particles Fill in the missing information. Make sure you have a periodic table handy. - Correct Answer-Calcium -48 would have 20 protons and 28 neutrons. Barium -130 would have Organic Organic 56 protons and 74 neutrons. Platinum -186 would have 74 protons and 108 neutrons. Copper -64 would have 29 protons and 35 neutrons. Sort the following into chemical or physical properties. - Correct Answer-Chemical Properties- Reactivity with water, Flammability, Breaking down at high temperatures Physical Properties, Physical state, Temperature, Color, Density Sort the following into the categories of substance versus mixture. - Correct Answer Pure Substances- Element, Compound Mixtures- Homogenous, Heterogenous An isotope has a mass number of 46 and an atomic number of 22. How many neutrons does this isotope have? 46 22 24 48 - Correct Answer-24 Select all the following that would be considered physical properties? - Correct Answer Density, Color, The temperature where a substance will freeze Select all the following subatomic particles that are found in the nucleus of an atom of oxygen. - Correct Answer-Neutron, Proton Select all the following that correctly give the mass and charge of the subatomic particles. - Correct Answer-Proton: Mass 1 AMU, Charge +1, Neutron: Mass 1 AMU, Charge 0 Determine the number of neutrons you would expect in sulfur -33. - Correct Answer-17 What element would have a mass number of 7 and 3 protons? - Correct Answer-Li Which of the following would be considered an element? - Correct Answer-Iron Match the following to the correct atomic number - Correct Answer-Atomic number: 17- An isotope with 18 neutrons and a mass number of 35 Atomic number 18- Argon Atomic number 19- An atom with 19 protons Atomic number 20- An isotope with a mass number of 40 and 20 neutrons Matter must: - Correct Answer-have both mass and volume Which of the following substances would you consider an ion? Organic Organic H2O LiBr NH3 K+ - Correct Answer-K+ Select all the following elements that you would classify as a metal (Select all that apply): Nitrogen Oxygen Iron Lithium - Correct Answer-Iron