Answer the following question given this paragraph: The formula unit of sodium chloride dissociates into one sodium ion and one chloride ion. The calcium nitrate formula unit dissociates into one calcium ion and two nitrate ions. This is because of the 2+ charge of the calcium ion. Two nitrate ions, each with a 1 charge are required to make the equation balance electrically. The ammonium phosphate formula unit dissociates into three ammonium ions and one phosphate ion. Note that the polyatomic ions themselves do not dissociate further, but remain intact. Q: The formula unit of sodium chloride dissociates into one sodium ion and one? A:

OPTIONS:
- oxygen ion
- magnesium ion
- electron
- chloride ion

Answer: chloride ion

Problem: OPTIONS:
- erosion
- evolution
- friction
- gravity
Q: Answer the following question given this paragraph: Q: When pumping blood, the hearts of animals with very long necks must overcome what force? A:
Answer: gravity

Problem:OPTIONS:
- filtration
- depletion
- degradation
- excretion

Answer the following question given this paragraph: Excretion is the process of removing wastes from the body. Q: Name the process of removing wastes from the body. A:
****
A: excretion

Answer the following question given this paragraph: Other lakes are crater lakes or rift lakes, which are pictured in Figure below . Crater lakes form when volcanic eruptions create craters that fill with water. Rift lakes form when movements of tectonic plates create low places that fill with water. Q: What kind of lakes form when volcanic eruptions create massive holes that fill with water? A:
OPTIONS:
- eruption bowls
- volcanic cavities
- lava lakes
- crater lakes
crater lakes

Answer the following question given this paragraph: We can also consider the reverse reaction in the above equation. In that reaction, the ammonium ion donates a proton to the hydroxide ion. The ammonium ion is a Brnsted-Lowry acid, while the hydroxide ion is a Brnsted-Lowry base. Most Brnsted-Lowry acid-base reactions can be analyzed in this way. There is one acid and one base as reactants, and one acid and one base as products. Q: The ammonium ion is what type of acid? A:
OPTIONS:
- normal -lowry
- kaon - lowry
- oxidized - lowry
- brnsted-lowry

Answer: brnsted-lowry

input with options: Answer the following question given this paragraph: The speed of sound also depends on the temperature of the medium. For a given medium such as air, sound has a slower speed at lower temperatures. You can compare the speed of sound in air at different temperatures in Table below . A lower temperature means that particles of the medium are moving more slowly, so it takes them longer to transfer the energy of the sound waves. The amount of water vapor in the air affects the speed of sound as well. Do you think sound travels faster or slower when the air contains more water vapor? ( Hint: Compare the speed of sound in water and air in Table above . ). Q: The amount of water vapor in the air and the temperature of the medium affects how fast what travels? A:
OPTIONS:
- colour
- light
- traffic
- sound
output:
sound