Hydrogen

Aim: • To investigate the effects of on the rate of reaction of magnesium with different concentrations of Hydrochloric acid (HCl). • To investigate the effects of different surface areas of magnesium in its rate of reaction with hydrochloric acid (HCl). Introduction: The rate in which reactions occur between chemicals, such as Magnesium and Hydrochloric Acid, are effected by four main factors. These factors are temperature, concentration, the presence of a catalyst and the surface area of…

Elephant’s Toothpaste Experiment Introduction: A chemical reaction is a process in which atoms of the same or different element rearrange themselves to form a new substance. There are 7 ways to tell if a chemical reaction has occurred; if there are gas bubbles forming, if a precipitate is forming, if the colour has changed, if the temperature has changed, if the volume has changed, if it is giving out light and if there is a change in smell or taste. In a chemical reaction heat is either…

electrons cause the molecule to oxidize almost instantly as these electrons react to try to find stability. The researcher team form IBM has found a way to overcome this obstacle. By starting with the molecule dihydrotriangulene, triangulene with a hydrogen attached to each of the unpaired electrons. The researchers were able…

olivine surface had been reduced to metallic iron during the reduction pre-treatment with hydrogen, this result proves that metallic iron was responsible for the olivine catalytic activity. We observed a similar catalytic activity between the reduced olivine and the nickel-based catalysts tested previously [40], i.e. negligible production of hydrocarbons CH4, C2H4 and C2H6 and maximum production of hydrogen. Whereas their production is tiny even at very short reaction times, results in Figure 5…

1. Distinguish between a chemical change and a physical change. Illustrate each using several examples. A physical change does not change the substance of the matter the identity does not change. A chemical change produces a new substance and absorbs or liberated heat. Chemical changes produce an indication of chemical change substances combine chemically producing new substances that cannot separated by physical means. Examples of physical changes: Dissolving salt in water is a physical…

The sixth element in the periodic table is one of the most important elements of them all, carbon. This element, located on group fourteen and period two of the periodic table, has an atomic number of 6 and a molar mass of 12.01; this means that it has 6 electrons, 6 protons, and 6 neutrons. The element is lightweight, fairly small, the fourth most abundant element on Earth, and is essential for living, growing, and reproducing. Carbon is found in all living and non-living organisms, in the form…

the process of nuclear fusion. Stage Six: Nuclear Fusion Ten million years after the shock wave, the star is officially born when it reaches an internal temperature of 10 million degrees Kelvin. At this pivotal temperature, the individual hydrogen protons are unable to repel each other any longer, and collide into each other forming a helium atom. This process not only forms a higher element, but also releases energy. It is this energy that we see as sunshine or light, and can feel as…

highlights of the chapter. The way I see it, God is the original/first chemist. He took His own creations (the elements in our Periodic Table) to make provisions for His ultimate creation, mankind. He made oxygen for use to breathe. God combined hydrogen and oxygen, in the right combination, to create water. He left precious metals like gold and silver for mankind’s use, and all of the other elements. The…

naturally in solid, liquid and gas forms. All life on earth is dependent on there being water. Water (H2O) is a covalent bond which is made up for two hydrogens and one oxygen. Water has a different, almost special type of bond, called a polar covalent bond. It’s also important to know that hydrogen bonds stick together, the positive pole around the hydrogen atoms bond to the negative pole around the oxygen atom bonds, this bonds…

REACTIONS OF ALDEHYDES AND KETONES ABSTRACT The difference between aldehydes and ketones is by having a hydrogen atom attached to the carbonyl group. This makes the aldehydes very easy to oxidize. Ketones do not have that hydrogen atom and are resistant to oxidation. They are only oxidized by powerful oxidizing agents which have the ability to break the carbon-carbon bonds. This report is about the reactions of aldehydes and ketones. This was done to determine how they react when different…