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Chemistry Questions. Question #1. According to Bronsted-Lowry definition, a base is: W. A proton donor X. An electron donor Y. A proton acceptor Z. An electron acceptor. Question #1. According to Bronsted-Lowry definition, a base is: W. A proton donor X. An electron donor
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Question #1 • According to Bronsted-Lowry definition, a base is: W. A proton donor X. An electron donor Y. A proton acceptor Z. An electron acceptor
Question #1 • According to Bronsted-Lowry definition, a base is: W. A proton donor X. An electron donor Y. A proton acceptor Z. An electron acceptor
Question #2 • What element does the symbol Fe stand for?
Question #2 • What element does the symbol Fe stand for? • Iron
Question #3 • Magnesium can exist as three naturally occurring isotopes. These isotopes would all have the same: • W. atomic weight • X. number of neutrons • Y. number of protons • Z. nucleus
Question #3 • Magnesium can exist as three naturally occurring isotopes. These isotopes would all have the same: • W. atomic weight • X. number of neutrons • Y. number of protons • Z. nucleus
Question #4 • Carbohydrates are made of what three elements?
Question #4 • Carbohydrates are made of what three elements? • Carbon, hydrogen, oxygen (C, H, and O)
Question #5 • In the chemistry lab, for safety reasons, when a concentrated acid is mixed with water: • W. the water is always added to the acid • X. the acid is always added to the water • Y. these can only be mixed at cold temperatures • Z. these can never be mixed
Question #5 • In the chemistry lab, for safety reasons, when a concentrated acid is mixed with water: • W. the water is always added to the acid • X. the acid is always added to the water • Y. these can only be mixed at cold temperatures • Z. these can never be mixed
Question #6 • It is estimated that each person in the United States consumes an average of 100 pounds of sucrose each year. Which two simple sugars are linked to make a sucrose molecule?
Question #6 • It is estimated that each person in the United States consumes an average of 100 pounds of sucrose each year. Which two simple sugars are linked to make a sucrose molecule? • Glucose and Fructose
Question #7 • What molecule is characteristically prevalent in sour milk and tired muscles?
Question #7 • What molecule is characteristically prevalent in sour milk and tired muscles? • Lactic Acid
Question #8 • Myoglobin binds oxygen in what tissue in the human body?
Question #8 • Myoglobin binds oxygen in what tissue in the human body? • Muscle
Question #9 • The wavelength of yellow light is 600 nanometers. What is the wavelength in centimeters? • W. 6.0 x 10-9 • X. 6.0 x 10-7 • Y. 6.0 x 10-5 • Z. 6.0 x 10-2
Question #9 • The wavelength of yellow light is 600 nanometers. What is the wavelength in centimeters? • W. 6.0 x 10-9 • X. 6.0 x 10-7 • Y. 6.0 x 10-5 • Z. 6.0 x 10-2
Question #10 • Many of the groups of elements in the periodic table have acquired common names. The elements in Group IA, with the exception of hydrogen, are called what?
Question #10 • Many of the groups of elements in the periodic table have acquired common names. The elements in Group IA, with the exception of hydrogen, are called what? • Alkali Metals
Question #11 • How many significant figures are there in the number 0.0036?
Question #11 • How many significant figures are there in the number 0.0036? • 2 (Two)
Question #12 • Name the two most abundant elements in the universe.
Question #12 • Name the two most abundant elements in the universe. • Hydrogen and Helium (H and He)
Question #13 • Fish in an aquarium require oxygen to live, which is usually done by pumping air into the fish tank using a mechanical pump. If all other things remain constant, the most effective transfer of oxygen to water comes from: • W. small bubbles of air • X. large bubbles of air • Y. bubbling of cold air • Z. slow bubbling of air
Question #13 • Fish in an aquarium require oxygen to live, which is usually done by pumping air into the fish tank using a mechanical pump. If all other things remain constant, the most effective transfer of oxygen to water comes from: • W. small bubbles of air • X. large bubbles of air • Y. bubbling of cold air • Z. slow bubbling of air
Question #14 • Under which of the following conditions will iron rust: • W. in water • X. in water and oxygen • Y. in oil • Z. in oil and water
Question #14 • Under which of the following conditions will iron rust: • W. in water • X. in water and oxygen • Y. in oil • Z. in oil and water
Question #15 • In order to compare two different gas samples, scientists use what is called the STP. What does STP stand for?
Question #15 • In order to compare two different gas samples, scientists use what is called the STP. What does STP stand for? • Standard Temperature and Pressure (0°C or 273 K and 1 ATM or 760 mm Hg)