Figure 1. The electrolysis of water produces stoichiometric amounts of oxygen gas at the anode and hydrogen at the anode. Source: OpenStax Chemistry 2e The Electrolysis of Water (OpenStax Chemistry 2e) Water may be electrolytically decomposed in a cell similar to the one illustrated in Figure 1. To improve electrical conductivity without introducing a different redox species, the … Continue reading The Electrolysis of Water
Figure 1. What event schema do you perform when riding in an elevator? (credit: “Gideon”/Flickr) What is Schemata? (OpenStax Psychology 2e) A schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing … Continue reading What is Schemata?
Figure 1. Within a blast furnace, different reactions occur in different temperature zones. Carbon monoxide is generated in the hotter bottom regions and rises upward to reduce the iron oxides to pure iron through a series of reactions that take place in the upper regions. Source: Openstax Chemistry 2e Isolation of Iron (Openstax Chemistry 2e) The early … Continue reading Isolation of Iron
Figure 1. (a) Diamond and (b) graphite are two forms of carbon. (c) In the crystal structure of diamond, the covalent bonds form three-dimensional tetrahedrons. (d) In the crystal structure of graphite, each planar layer is composed of six-membered rings. (credit a: modification of work by “Fancy Diamonds”/Flickr; credit b: modification of work from http://images-of-elements.com/carbon.php) What is … Continue reading What is Carbon?
Figure 1. In this hydrogen fuel cell, oxygen from the air reacts with hydrogen, producing water and electricity. Source: OpenStax Chemistry 2e What are fuel cells? (OpenStax Chemistry 2e) A fuel cell is a galvanic cell that uses traditional combustive fuels, most often hydrogen or methane, that are continuously fed into the cell along with an oxidant. (An alternative, … Continue reading What Are Fuel Cells?
Figure 1. This chart illustrates the circadian change in body temperature over 28 hours in a group of eight young men. Body temperature rises throughout the waking day, peaking in the afternoon, and falls during sleep with the lowest point occurring during the very early morning hours. Source: OpenStax Psychology 2e Biological Rhythms (OpenStax Psychology 2e) … Continue reading Biological Rhythms
Figure 1. As one of their mechanisms of action, cocaine and amphetamines block the reuptake of dopamine from the synapse into the presynaptic cell. Source: OpenStax Psychology 2e What is a Stimulant? (OpenStax Psychology 2e) Stimulants are drugs that tend to increase overall levels of neural activity. Many of these drugs act as agonists of the dopamine neurotransmitter … Continue reading What is a Stimulant?
Source: By Injurymap - editInjuryMap - Free Human Anatomy Images and Pictures. Retrieved on 2019-08-10., CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=78335761 Pain Perception (OpenStax Psychology 2e) Pain is an unpleasant experience that involves both physical and psychological components. Feeling pain is quite adaptive because it makes us aware of an injury, and it motivates us to remove … Continue reading Pain Perception
Figure 1. The correlations of IQs of unrelated versus related persons reared apart or together suggest a genetic component to intelligence. Source: OpenStax Psychology 2e High Intelligence: Nature or Nurture? (OpenStax Psychology 2e) Where does high intelligence come from? Some researchers believe that intelligence is a trait inherited from a person’s parents. Scientists who research this topic typically use … Continue reading High Intelligence: Nature or Nurture?
Figure 1. Different cultures, societies, and religions have varying practices surrounding death. For example, people’s bodies may be (a) buried in a cemetery, (b) cremated and buried at sea as in this U.S. Navy ceremony, or (c) cremated such as in this Hindu ceremony in Bali. (credit a: modification of work by Christina Rutz; credit b: modification … Continue reading Death and Dying