Lab 2 the Chemistry of Life
Lab 2: The Chemistry of Life Name _____Aniqa Qureshi_
Insert the chemical symbol in the answer blank for each of the following elements.
___O______ 1. oxygen
___C______ 2. carbon
___K______ 3. potassium
___I______ 4. iodine
___H______ 5. hydrogen
___N______ 6. nitrogen
____Ca_____ 7. calcium
____Na_____ 8. sodium
____P_____ 9. phosphorus
____Mg_____ 10. magnesium
____Cl_____ 11. chloride
____Fe_____ 12. iron
In the space below, list the chemicals (above) from the MOST abundant in the human body to the LEAST abundant.
Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus, Potassium, Sodium, Chloride, magnesium, iodine, iron
For the statements below, highlight the correct word or fill in the blank as indicated:
1. A cation is an atom that has (lost/gained) an electron, giving it a (positive/negative) electrical charge.
2. An anion is an atom that has (lost/gained) an electron, giving it a (positive/negative) electrical charge.
3. A _electrolyte_ is an ionic compound that, when dissolved in water, dissociates into component ions other than H+ and OH-.
4. Ions that conduct an electrical current in solution are called ___electrolytes______.
5. A hydrogen atom has (one/zero) proton(s), (one/zero) electron(s), and (one/zero) neutron(s).
6. A hydrogen ion has (one/zero) proton(s), (one/zero) electron(s), and (one/zero) neutron(s).
7. Acids are substances that (release/accept) hydrogen ions.
8. Bases are substances that (release/ accept) hydrogen ions.
9. The bicarbonate ion is an important (acid/base) in the human body.
10. Because water molecules have a positive pole and a negative pole, we consider the water molecule to be a _polar__ molecule.
11. Water molecules bond with other water molecules by a weak _hydrogen__ bond.
12. _buffer_ are substances that resist abrupt and large swings in the pH of body fluids by releasing hydrogen ions when the pH starts to (rise/drop) and by binding hydrogen
Insert the chemical symbol in the answer blank for each of the following elements.
___O______ 1. oxygen
___C______ 2. carbon
___K______ 3. potassium
___I______ 4. iodine
___H______ 5. hydrogen
___N______ 6. nitrogen
____Ca_____ 7. calcium
____Na_____ 8. sodium
____P_____ 9. phosphorus
____Mg_____ 10. magnesium
____Cl_____ 11. chloride
____Fe_____ 12. iron
In the space below, list the chemicals (above) from the MOST abundant in the human body to the LEAST abundant.
Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus, Potassium, Sodium, Chloride, magnesium, iodine, iron
For the statements below, highlight the correct word or fill in the blank as indicated:
1. A cation is an atom that has (lost/gained) an electron, giving it a (positive/negative) electrical charge.
2. An anion is an atom that has (lost/gained) an electron, giving it a (positive/negative) electrical charge.
3. A _electrolyte_ is an ionic compound that, when dissolved in water, dissociates into component ions other than H+ and OH-.
4. Ions that conduct an electrical current in solution are called ___electrolytes______.
5. A hydrogen atom has (one/zero) proton(s), (one/zero) electron(s), and (one/zero) neutron(s).
6. A hydrogen ion has (one/zero) proton(s), (one/zero) electron(s), and (one/zero) neutron(s).
7. Acids are substances that (release/accept) hydrogen ions.
8. Bases are substances that (release/ accept) hydrogen ions.
9. The bicarbonate ion is an important (acid/base) in the human body.
10. Because water molecules have a positive pole and a negative pole, we consider the water molecule to be a _polar__ molecule.
11. Water molecules bond with other water molecules by a weak _hydrogen__ bond.
12. _buffer_ are substances that resist abrupt and large swings in the pH of body fluids by releasing hydrogen ions when the pH starts to (rise/drop) and by binding hydrogen