Chemical reactions occur when atoms, molecules, and ions interact with one other to form new substances. Chemical bonds are broken and new bonds are formed. Chemical bonds between atoms follow rules based on patterns of electron distribution within t Continue Reading...
molecules collide with enough activation energy that the chemical bonds break. Once these chemical bonds are broken, new bonds and products are then formed. Thus, the two previous molecules were moving at a fast enough speed to break the original ch Continue Reading...
living things are characterized by the following seven characteristics namely mobility, respiration, excretion, sensitivity or response to external stimulus, growth, feeding, and reproduction. Though there may be variations between animal and plant Continue Reading...
Physical Science Elemental Isotopes and Allotropes The 19th century discovery of the periodic table of the elements by Dmitri Mendeleev gave an organizing principle to understanding the structure of the atom, and deriving atomic weight. On the peri Continue Reading...
o Describe difference a mixture a compound o Suppose a pure substance. How a compound element? o What difference ionic a covalent bond? o Explain ionic compounds formed a metal left side periodic table reacts a nonmetal side. An overview of mixture Continue Reading...
Physical Science Grade Course Describe the difference between a mixture and a compound For basic understanding, a mixture comprises of two or more different substances which are not chemically combined to each other. On the other hand, a compound Continue Reading...
The Golgi receives new proteins and lipids from the ER, finishes them up, addresses them and sends them to their final destination. In this way, the Golgi could be the postal service of the city. Lysosomes get rid of unusable waste within the cell a Continue Reading...
Mixture, Compounds, Covalent and Ionic Bonds Describe difference a mixture a compound Suppose a pure substance. How a compound element? What difference ionic a covalent bond? Explain ionic compounds formed a metal left side periodic table reacts a n Continue Reading...
Nutrition-Health-Science The Digestive System Mechanical digestion begins the process of digestion. Otherwise known as chewing, it "involves mixing, grinding, or crushing large pieces of food into small pieces" (Lab: Mechanical and chemical digesti Continue Reading...
Collision Model: Explanation and Application The Collision Model is the theory that chemical reactions are the result of collisions between molecules. These molecular collisions must be strong enough to break bonds in the reacting substances. Breaki Continue Reading...
Evolution of Chemistry to the Periodic Table of the Elements One of the differences between scientists of the 17th and 18th centuries vs. scientists today is that the chemists of times past were often theologians. They studied chemistry and other fo Continue Reading...
There are about 6 billion nucleotide letters of a particular sequence in a human cell. The full set is known as the genome. DNA information is found in units called genes. One gene codes roughly for one protein. The proteins perform most of the func Continue Reading...
These massive walls of water travel faster than a commercial jet as they descend upon cities and islands. The energy and force of a Tsunamis is the massive transference of potential energy, caused by the shifting currents of the ocean, into kinetic Continue Reading...
"The initial response to acute inflammation includes a rapid drop in numbers of circulating eosinophils, a rapid accumulation of eosinophils at the periphery of the inflammation site and an inhibition of egress of eosinophils from the bone marrow" ( Continue Reading...
This means that all of the stars in the universe must be moving away from Earth. If all of the stars are moving away, the Universe itself must be expanding. It was this discovery of the Doppler Effect in star light that led to the Big Bang Theory. ( Continue Reading...
The energy it stores (?180 Wh kg?1) at an average voltage of 3.8 V is only a factor of 5 higher than that stored by the much older lead -- acid batteries. This may seem poor in the light of Moore's law in electronics (according to which memory capac Continue Reading...
or, to put it another way, "chemistry carried out with the primary object of investigating the workings of nature is what we now call physical chemistry" (Laidler, 5). This has made the distinction between physics and chemistry at this frontier very Continue Reading...
On Feb. 2, 2007, the United Nations scientific panel studying climate change declared that the evidence of a warming trend is "unequivocal," and that human activity has "very likely" been the driving force in that change over the last 50 years. The Continue Reading...
Eternal Circle of Time Electrons circle the nucleus of an atom. Untold trillions of atoms collide together and explode. The universe expands. Electrons race down the copper wires of an electric cable. The sun shines. Leaves digest the sunlight, pro Continue Reading...
From a materials development perspective, this is the important part: "The significance of this advance is this: if a material as expensive and rare as a diamond can be turned into a 'commodity,' then the applications of a variety of other materials Continue Reading...
This condition slows down the heating process and also because of convection currents. Land and water have different capacities for absorbing and liberating heat. It is good to note that the specific heat of water is higher than that of land. Hence, Continue Reading...
Noncoding DNA, also known as "junk DNA" describes portions of the DNA sequence that do not appear to have any presentable use -- they do not encode for proteins, etc. In fact, in a most eukaryote cells, a rather large percentage of the total genome Continue Reading...
Business Nuclear power, under current conditions, is characterized by much lower regular emissions compared to energy from fossil fuel burning. But, it poses its own unique hazards, of which the most notable is risk of industrial accidents (e.g. Che Continue Reading...
Search for Extraterrestrial Life: The Existence of Non-Human Intelligent Beings in Our Galaxy The possibility of extraterrestrial life has always intrigued philosophers, scientists, theologians and even lay people for centuries. The fascinating ques Continue Reading...
Fuel Cells in Green Engineering The energy tomorrow is beginning to be available today. Fuel cells, which just a very few years ago were a pipe dream, are becoming g a reality, and they are used in areas ranging from space exploration to toy motivat Continue Reading...
Muscular System Function of action potentials? The function of action potentials is to rapidly communicate information within a neuron, coupling the neurons "input," either synaptic, sensory or intrinsic stimulation with its output, neurotransmitte Continue Reading...
Heat, Temperature, And Kinetic Theory The summer sun can make it seem easy to understand the concepts of heat and temperature, at least in a visceral sense, but understanding what these concepts mean and how they interact in the more objective and c Continue Reading...
role of disease prevention through herbs and diet, and what constitutes a healthy lifestyle. Just about everyone knows that diet and exercise play a vital role in overall good health. Just about everyone knows that fresh fruits and vegetables should Continue Reading...
Biology autonomous from physical sciences? Background of debate Biological science has undergone a time of progressive change in the last few decades. A distinctive element of this progress has been a continuous addition of fresh theoretical point Continue Reading...
Physical Science: Heat It is reasonable to suggest that just about everyone has felt the warmth of the sun or warmed themselves by a fireside, but many people may not understand the source of the energy they are feeling, particularly at the molecula Continue Reading...
This information is utilized to create new products and substances that are used on a regular basis. For example, chemists could use the COSY process to understand how to create a new kind of raincoat that will be even more water resistant. To deter Continue Reading...
Amidation of Peptides in Humans Modern biotechnology has experienced dramatic leaps in the body of knowledge concerning molecular processes in peptides and how they work. Many of these processes rely on amidation of peptides to achieve increasingly Continue Reading...
Chocolate: Behind Its Bad Rap In today's society, chocolate is everywhere. It seems that people have developed a love-hate relationship with chocolate. According to the U.S. Department of Commerce, in 1997, the average American ate 11.7 pounds of ch Continue Reading...
Batteries and the Environment BATTERIES AFFECT ON THE EVIRONMENT A Study of the Impact of Batteries on Waste and the Environment The disposal of batteries can led to negative consequences for human health. There are various types of batteries and Continue Reading...
There is a link to order a test kit if someone were in need of one. There is also information for those who have already tested and need help in interpreting their results. There is also link to check the county where one lives to see what the radon Continue Reading...
Given a mosquito's vastly shorter life span, preventing the spread of the infection to more human hosts greatly reduces the number of viable parasites in existence (CDC 2009). 10) There are several reasons that viral infections are more difficult Continue Reading...
Heat How does the study of heat relate to the kinetic theory of matter? There is a close relationship between the study of heat and the kinetic theory of matter. It is significant therefore to first understand the principles behind the kinetic theo Continue Reading...
microwave oven is one of the great inventions of the twentieth century since millions of homes in America have one. Microwave ovens are popular because they cook food incredibly quickly. They are also extremely efficient in their use of electricity Continue Reading...
" The difference in the Manhattan Project and other companies that were very similar in function was due to the need to become quickly successful and investments of "hundreds of millions of dollars in unproven and hitherto unknown processes and did s Continue Reading...
