Problem: OPTIONS:
- radioactive
- magnetic
- thermal
- electrochemical
Q: Answer the following question given this paragraph: Electrochemistry is the study of chemical processes that occur at the interface between an electron conductor, such as a wire, and a solution of electrolytes, which is often simply an ionic substance dissolved in water. Electrochemical processes involve a transfer of electrons between the wire and the solution. These reactions can be used to create electrical power, to purify metals, and to carry out a number of useful chemical transformations. Q: What processes involve a transfer of electrons between the wire and the solution? A:
Answer: electrochemical

Problem:OPTIONS:
- polymer substances
- devil substances
- eerie substances
- phosphorescent substances

Answer the following question given this paragraph: Once excited, an atom or molecule will usually spontaneously de-excite quickly. (The electrons raised to higher levels are attracted to lower ones by the positive charge of the nucleus. ) Spontaneous de-excitation has a very short mean lifetime of 8 typically about 10 s . However, some levels have significantly longer lifetimes, ranging up to milliseconds to minutes or even hours. These energy levels are inhibited and are slow in de-exciting because their quantum numbers differ greatly from those of available lower levels. Although these level lifetimes are short in human terms, they are many orders of magnitude longer than is typical and, thus, are said to be metastable, meaning relatively stable. Phosphorescence is the de-excitation of a metastable state. Glow-in-the-dark materials, such as luminous dials on some watches and clocks and on children's toys and pajamas, are made of phosphorescent substances. Visible light excites the atoms or molecules to metastable states that decay slowly, releasing the stored excitation energy partially as visible light. In some ceramics, atomic excitation energy can be frozen in after the ceramic has cooled from its firing. It is very slowly released, but the ceramic can be induced to phosphoresce by heatinga process called "thermoluminescence. " Since the release is slow, thermoluminescence can be used to date antiquities. The less light emitted, the older the ceramic. (See Figure 30.35. Q: What makes luminous dials glow in the dark? A:
****
A: phosphorescent substances

Answer the following question given this paragraph: Enthalpy changes also occur when a solute undergoes the physical process of dissolving into a solvent. Hot packs and cold packs (see Figure below ) use this property. Many hot packs use calcium chloride, which releases heat when it dissolves according to the equation below. Q: When a solute dissolves into a solvent what is that called? A:
OPTIONS:
- solubility
- viscosity
- mixing
- enthalpy
enthalpy

Answer the following question given this paragraph: Acids are molecular compounds that dissolve in water to produce hydronium ions and an anion. Q: Acids are molecular compounds that dissolve in water to produce hydronium ions and what else? A:
OPTIONS:
- a neutron
- a proton
- an alkali
- an anion

Answer: an anion

Question: Answer the following question given this paragraph: Pulmonary gas exchange is the exchange of gases between inhaled air and the blood. It occurs in the alveoli of the lungs. Alveoli (singular, alveolus) are grape-like clusters surrounded by networks of thin-walled pulmonary capillaries. After you inhale, there is a greater concentration of oxygen in the alveoli than in the blood of the pulmonary capillaries, so oxygen diffuses from the alveoli into the blood across the capillaries (see Figure below ). Carbon dioxide, in contrast, is more concentrated in the blood of the pulmonary capillaries than in the alveoli, so it diffuses in the opposite direction. Q: In what part of the lungs is pulmonary gas exchanged? A:
OPTIONS:
- bronchioles
- trachea
- bronchi
- alveoli
Answer: alveoli

input: OPTIONS:
- fat
- hydrogen
- water
- energy Now, answer this question: Answer the following question given this paragraph: Q: Some metabolic pathways release what by breaking down complex molecules to simpler compounds? A:
A:
output:
energy