Zinc oxide

Ranking the metals copper, magnesium, iron, zinc and hydrogen in terms of their reactivity. HYPOTHESIS: Copper Cu + HCL → N.R. Cu + CuCl2 → N.R. Cu + Mg(NO3)2 → N.R. Cu + Fe(NO3)3 → N.R. Cu + Zn(NO3)2 → N.R. Magnesium Mg2 + 2HCL → H2 + 2MgCl Mg + CuCl2 → Cu + MgCl2 Mg + Mg(NO3) → N.R. Mg + Fe(NO3)3 → Fe + Mg(NO3)3 Mg + Zn(NO3)2 → Zn + Mg(NO3)2 Iron Fe + HCL → N.R. Fe + CuCl2 → Cu + FeCl Fe + Mg(NO3)2 → N.R. Fe + Fe(NO3)3 → N.R. Fe + Zn(NO3)2 → N.R. Zinc 2Zn + 2HCl → H2 + 2ZnCl Zn + CuCl2 →

Harry Brearley invented stainless steel. My invention is stainless steel. Stainless steel was invented in 1916. It was used for most appliances like washing machines, some stoves, fridges, freezers and some pans. Stainless steel helped manufacture many appliances. Before stainless steel was used people in 1821 they were realizing that steel was resistant to some acids. Some of the acids steel is resistant to are on your finger tips. Stainless steel was first produced 100 years ago. Before the stainless

Gas is an invaluable commodity in today’s society. It is used in everything from cars, to lawnmowers, to generators, to boats. Everyone uses it, but what exactly goes into it besides oil? One of the answers to this is ethanol. Ethanol has been going into gasoline since the 1920’s and was widely used during WWII (Gustafson, 2010). Ethanol gasoline became popular in the 1970’s due to the climbing prices of gasoline (Gustafson, 2010). The high price of gasoline was a result of oil shortages because

Zinc’s density is the closest to the density the students found. Zinc is also relatively cheap, only being $1.05 per pound, and is quite easily attainable, according to mining.com. Tin couldn’t be used in post-1982 pennies because tin is very malleable. Manganese couldn’t be used in post-1982 pennies because manganese

Cobalt-60 is an important source of gamma radiation and is used in some medical fields to treat cancer. As it is a metal, cobalt will not react with water or air at room temperature. However, if cobalt is heated to above 900 degrees Celsius, the oxide Co3O4 will form. As far as acids go, cobalt will react to sulfuric acid and will be deteriorated. The direct reaction between cobalt and bromine will result in dibromide cobalt (II) bromide, CoBr2 being formed. Cobalt is not reactive with

change (a substance that is turned into something new). A reason that the penny that was in vinegar changed so much, compared to the penny that was in water is because of oxidation. Oxidation is when metal reacts with oxygen in the air to produce metal oxides. When exposed to air, the metal loses electrons and changes different colors. Due to this, the metal has lost electrons to oxygen, which means the metal has been oxidized. This is how the penny turned a different color. The penny was combined chemically

Percent Copper and Zinc in Pennies From Density Purpose: Practicing determine the density of the solution. Developing the method for determine the percent of density for the solution. Examining the linear relationship by learning to use the best-fit straight line. Using the linear relationship to determine the percent of density by the solution. Be familiar with recording data and observations. Methods & Material: Methods: Weight the mass for the different percent of zinc and copper mixtures

New studies have revealed that lead production varied in ancient Europe with production mirroring the rise and fall of the Roman empire in Western Europe but remaining strong throughout the rise and fall of the Roman empire in Eastern Europe. Lead production and toxicity persists to this day. Historical lead production Lead has fallen out of favor due to its toxicity however it was commonly used in ancient times. Some of the first evidence of lead is found in the form of metallic lead beads

[1] (iv) Complete the symbol equation for the reaction of calcium oxide with hydrochloric acid. CaO + ...............HCl → CaCl 2 + ............... (v) State the chemical name of the compound CaCl 2. .......................................................................................................................

Acid Rain Acid rain, to our eyes, is not much different from regular rain, but the contents of that precipitation can be devastating to plant-life and ecosystems. Acid rain is formed in the atmosphere when gases such as sulfur dioxide are oxidized; sulfur trioxide is converted into sulfuric acid by a chemical reaction with water, or when nitrogen dioxide reacts with hydroxide to form nitric acid. The most oxidation reactions are with ozone, hydrogen peroxide, and of course, oxygen. There are