Q: Answer the following question given this paragraph: Some materials have negative heats of solution; the dissolution of one of these solutes in water is an exothermic process. Heat is released, causing a net increase in the temperature of the solution. Conversely, other substances have positive heats of solution. For example, the dissolution of potassium nitrate in water is an endothermic process. The resulting absorption of energy causes the solution to become colder. Calculations involving heats of solutions follow the same basic approach that we have used with other enthalpy problems. Q: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called? A:

OPTIONS:
- endothermic process
- acetylene process
- ionized process
- exothermic process

A: exothermic process

input: OPTIONS:
- kinetic
- nuclear
- thermal
- infrared Now, answer this question: Answer the following question given this paragraph: Ultraviolet radiation has the highest energy; infrared the lowest. Q: Ultraviolet radiation has the highest energy; which has the lowest? A:
A:
output: infrared

Answer the following question given this paragraph: Ultrasound in Medical Diagnostics When used for imaging, ultrasonic waves are emitted from a transducer, a crystal exhibiting the piezoelectric effect (the expansion and contraction of a substance when a voltage is applied across it, causing a vibration of the crystal). These highfrequency vibrations are transmitted into any tissue in contact with the transducer. Similarly, if a pressure is applied to the crystal (in the form of a wave reflected off tissue layers), a voltage is produced which can be recorded. The crystal therefore acts as both a transmitter and a receiver of sound. Ultrasound is also partially absorbed by tissue on its path, both on its journey away from the transducer and on its return journey. From the time between when the original signal is sent and when the reflections from various boundaries between media are received, (as well as a measure of the intensity loss of the signal), the nature and position of each boundary between tissues and organs may be deduced. Reflections at boundaries between two different media occur because of differences in a characteristic known as the acoustic impedance Z of each substance. Impedance is defined as. Q: What diagnostic technology uses high-frequency vibrations transmitted into any tissue in contact with the transducer? A:

OPTIONS:
- laser
- radiation
- sonar
- ultrasound

Answer: ultrasound

Problem: OPTIONS:
- main
- thin
- inner
- outer
Q: Answer the following question given this paragraph: The outer ear includes the pinna, ear canal, and eardrum. Q: The eardrum is part of what part of the ear? A:
Answer: outer

Problem:OPTIONS:
- symmetrical reaction
- aquatic reaction
- diffusion reaction
- dipole reaction

Answer the following question given this paragraph: The attractive force between water molecules is a dipole interaction. The hydrogen atoms are bound to the highly electronegative oxygen atom (which also possesses two lone pair sets of electrons, making for a very polar bond. The partially positive hydrogen atom of one molecule is then attracted to the oxygen atom of a nearby water molecule (see Figure below ). Q: The attractive force between water molecules is what kind of reaction? A:
****
A: dipole reaction

Problem:OPTIONS:
- energy
- bacteria
- sound
- particle

Answer the following question given this paragraph: In 1905, the physicist Albert Einstein developed a new theory about electromagnetic radiation. The theory is often called the wave-particle theory . It explains how electromagnetic radiation can behave as both a wave and a particle. Einstein argued that when an electron returns to a lower energy level and gives off electromagnetic energy, the energy is released as a discrete "packet" of energy. We now call such a packet of energy a photon . According to Einstein, a photon resembles a particle but moves like a wave. You can see this in the Figure below . The theory posits that waves of photons traveling through space or matter make up electromagnetic radiation. Q: Einstein developed a theory about how electromagnetic radiation can behave as both a wave and what else? A:
****
A:
particle