Chemical Elements Lab Report

Task 1 (P1) The periodic table is laid out into groups and periods. They are also put into different blocks S-Block, D-Block, P-block and F-Block due to their energy levels. They are organised by their energy levels and chemicals properties. As the elements go along the periods in the periodic table the electronegativity increases but as the elements go down the groups the electronegativity decreases.

One of the reactions you observed resulted in this product: NaCl + H2O + CO2 (g)? What well did this reaction occur in? Describe how the observations for this reaction support your answer. B BoldI ItalicsU Underline Bulleted list Numbered list Superscript Subscript70 Words A reaction I observed in number 1.)

Copper is essential for all life, but only in small quantities. Copper appears in the periodic table at the top of Group 11 in the 4th period above silver and gold. Copper is one of the most important metals. Specifically, it is a transition metal on the periodic table. Copper is reddish with a bright metallic lustre.

The alkali metals are softer than most other metals. Cesium and francium are the most reactive elements in this group. Alkali metals can explode if they are exposed to

Discussion In the Chemical Weathering Lab experiment, 4 different rocks were tested in 4 different substances, being 50% vinegar, 10% vinegar, soda, and distilled water. The mass of the rocks and the pH of the substances were both measured before the experiment began. The rocks were left for 5 weeks and the changes in mass and pH were observed. The reasoning for this experiment was to see how weathering would affect rocks, specifically chemical weathering.

Introduction: The purpose of this experiment is to demonstrate the different types of chemical reactions, those including Copper. There are different types of chemical reactions. A double displacement reaction is a chemical process involving the exchange of bonds between two reacting chemical species. A a decomposition reaction is the separation of a chemical compound into elements or simpler compounds and the single-displacement reaction is a type of

-58(68.27 percent) -60(26.10 percent) -Group Name = Transition Metals -Group = 10 -Electron Configuration = 1s2 2s2 3s2 3p6 4s2 3d8 Physical Properties: Nickel is a silvery, lustrous white metal that is very tough ( it is even harder than iron) and has a shiny polish on top.

4. What is an appropriate ionic radius for a couple of the missing elements in your table? 5. Are there any inconsistencies in the periodic table? Is there anything odd or that stick out of the normal pattern?

This classification is based on several characteristics: 1) zinc is a metal essential to hundreds of biological processes 2) zinc is relatively abundant in the natural environment; 3) the recommended daily allowance(RDA) of zinc in the human population is 8 to 15 mg higher than many other essential metals, 4) zinc does not appear to accumulate in the body with age , 5) there are no known genetic abnormalities which result in excessive accumulation of zinc in the body, unlike metals such as copper (Wilson's disease) and iron (hemochromatosis). The US Environmental Protection Agency standard for maximum zinc concentration drinking water is 5

Ca, Al, O 21. List the following atoms in order of decreasing electronegativity: Cl, K, Cu Cl, Cu, K Ionization Energy: 26. Define Ionization

Electrons in Metals Fallyn Walker 14423422 An electron is a negatively charged, sub atomic particle. It is a fermion, a particle named after the Fermi-Dirac statistics, which describes the electrons behaviour . Bohr proposed that the electron could move from orbitals. This could explain the spectrum for hydrogen but failed for other elements.

P1 - Volumetric Analysis Made Easy The periodic table is split into 8 different categories. Group 1 consists of alkali metals which are very reactive. However group 7 contains very reactive non-metals. The periodic table starts from alkali and ends at noble gases (Group 8).

They react very strongly in the reaction with water. However, a couple of the alkali metals do not react well at all with any other element. For example, francium has the lowest electronegativity, which means that the power of an atom to attract electron density to itself is very unlikely. The alkali metals combine very readily with the halogen group. This is because the alkali metals have one valence electron that they are ready to lose, and the halogens have seven valences electrons.

As well as this , their position on the periodic table makes them alkali metals, which means that they all have low boiling and melting points. As well as this , they will react violently when placed in water and will create a strong base and hydrogen gas as the products of the reaction. Group seven elements are known as halogens and consist of five non-metal elements with seven electrons in their outer shell.

The Periodic Table is used to show how elements are similar. The elements are split into groups and periods. Elements in the same columns have similar chemical and physical properties. I will be describing three of the element on the periodic table and explain how the earth would be like without them. These elements, that I have chosen are Rhenium, Osmium, and Iridium Rhenium is element 75 on the periodic table as a metal.