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

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)