An overview about the chemical element Silver

One of the well known chemical elements is Silver. It is a white, lustrous transition element that is represented by the chemical symbol Ag which was derived from a Latin word "Argentum" which means silver. The name silver came from an old English or Anglo-Saxon word "seolfor" which also means silver. It has an atomic number of 47, atomic weight of 107.87 and atomic volume of 10.3 cc/mol. Silver is slightly harder than gold. It is also described as ductile and malleable metal with a melting point of 961.930C or 17610F, boiling point of 22.120C, specific gravity of 10.50 (200C) and valences of 1 and 2. In the periodic table of elements, Silver is part of period 5 with elements like Zirconium, Tin and Iodine and belongs to group 11 family with Copper, Gold and Roentgenium. READ MORE AT http://www.helium.com/items/1354935

An overview about the chemical element Selenium

With an atomic number of 34, atomic mass of 78.96 and represented by a chemical symbol Se, Selenium is a chemical element that is considered chemically related to sulfur and tellurium. It is a mineral that is essential to good health but required only small amount for it can be toxic if taken in large quantity. In the periodic table of elements, Selenium belongs to the Chalcogen or group 16. It is classified as non-metallic that stays solid at 2980K. READ MORE AT http://www.helium.com/items/1354947

An overview about the chemical element Ruthenium

A chemical element that is considered rare transition metal, very hard and brittle. It is silver gray in color and one of the platinum metals from group eight of the periodic table of element together with rhodium, palladium, osmium, iridium, and platinum. It is used as hardener in alloys of platinum and palladium that even only small amounts of it can increase the hardness of platinum and palladium. The corrosion resistance of titanium is increased markedly by the addition of a small amount of ruthenium. READ MORE AT http://www.helium.com/items/1354952

An overview about the chemical element Strontium

Strontium is an alkaline earth metal using a chemical symbol Sr, with atomic number of 38, atomic weight of 87.62 and atomic volume of 33.7 cc/mole. It can be described as a soft silver-white but it turns yellow when exposed to air making it a yellowish metallic element that is highly reactive chemically. Known to be a malleable metal, it was observed to have a melting point of 10420K and boiling point of 16570K. READ MORE AT http://www.helium.com/items/1354959

The most effective way to prepare for an exam

Examination days seem to be nightmares for students because it is stressful and full of anxiety. Sometimes, students find it hard to review all given scope and encounter mental blocking during the actual exam. Others were confused and failed to organize well their review schedule. READ MORE AT http://www.helium.com/items/1354962

A brief history of Chemistry

It is believed that Chemistry started since the early times of our prehistoric ancestors. It began when the ancient civilizations tried using technologies like metal extracting from their ores, pottery making and glazes, beer and wine fermentation, making pigments for cosmetics and painting, producing medicines and perfume from plant and fruit extract, making of cheese, dying cloth, glass making and production of alloys like bronze. READ details at http://www.helium.com/items/1350030

The importance of review of related literature in a research paper

In writing a research paper, the review of related literature is considered a difficult task but plays an essential part in the completion of the study. Review of related literature involves the systematic identification, location and analysis of documents containing information related to the research problem. READ MORE AT http://www.helium.com/items/1341518

Chemistry: How to write chemical formulas

The composition of a compound is best represented by a chemical formula. It is made up of symbols and subscripts. The symbols denote the atoms that compose the compound while the subscripts indicate the number of atoms for each element present in the compound. The presence of parenthesis in a chemical formula signifies that the number of all atoms within the parenthesis should be multiplied by the number appearing outside of the parenthesis. READ details at http://www.helium.com/items/1341647

An overview of the periodic table of the elements

Going back to my school days in college, who could forget the periodic table of elements which we were obliged to memorize just to pass eight units of Chemistry. There is no chemistry textbook, classroom or laboratory that does not have a copy of the periodic table. During our days, we have 109 known elements but nowadays, there are 118. Am I right or I already lost count? READ details at http://www.helium.com/items/1342634

The characteristics of good business research objectives

The effectiveness of a research paper does not only contribute to a good research problem but also to its objective. To define, an objective refers to an effect that is desired or expected to be achieved by an activity, project or program. It merely refers to the purpose why the research investigation is being done. Read more at http://www.helium.com/items/1344353

Tips for choosing a research topic

The research process always starts in choosing the topic. It seems so easy to do but in reality, it is not an easy task. Remember, not all topics are considered researchable. Sometimes, there are topics that do not need a research undertaking because it calls for only one possible solution. Therefore, choosing a research topic is an important decision to make for it carries all what is needed to complete a credible research paper. Read details at http://www.helium.com/items/1344466

What are the threats to validity of business research results?

A business research is proven to be of big help to a company as long as it provides reliable and concise findings or results. Choosing the right kind of research design will eliminate the risk of being susceptible to factors that can invalidate the study. Read the details at http://www.helium.com/items/1345821

World's smallest countries

If there are largest countries in the world, definitely, there is also smallest one. But take note that they might be very inferior in land size but does not necessarily mean that they are also economically down. READ MORE AT http://www.helium.com/items/1345979

How statistics can be manipulated?

Statistics is one of the mathematical science most commonly used. Results derived from it can always be seen on newspaper, magazines, TV, radio, billboards and other medium, which is used to describe certain event, population or forecasted data. Because statistics is a mathematical tool that includes collection, analysis, interpretation or explanation and presentation of data. Aside from the fact that it is widely used in analyzing and presenting research results, it is also applicable to a wide variety of academic disciplines, from the natural and social sciences to humanities, government and business. Read details at http://www.helium.com/items/1346011

An overview of Kingdom Monera

Whenever I hear the word monera, it always reminds me of my biology class. For kingdom monera is one of the five biological kingdoms. The word monera came from the Greek word " moneres", which means single or solitary. That explains why single-celled organisms are called monera. READ MORE AT http://www.helium.com/items/1348494

An overview about the chemical element Tin

Came from the Latin word, Stannum, with chemical symbol of Sn, Tin is one of the seven elements in the periodic table that are classified as "other metals" and are located in groups 13, 14 and 15. These elements are ductile and malleable but are not the same as the transition elements. It does not exhibit variable oxidation states, and its valence electrons are only present in its outer shell. READ MORE AT http://www.helium.com/items/1348687

What to avoid when writing a research paper?

It takes full determination and extended effort to write a research paper. All possible options will be opened for you to gather the most relevant information that will make your research capable of answering the given problem, prove the stated hypothesis and meet the aimed research objectives. READ MORE AT http://www.helium.com/items/1339021

Ethical issues in research

Although conducting a research is very helpful in finding solutions to a certain major problem, there are some ethical issues that arises in the process of its completion. A good research cannot be determined by the scope it covered but by the manner it is conducted. READ MORE AT http://www.helium.com/items/1338918

How to write a compelling research paper?

In writing a compelling research paper, certain steps or stages should be followed. These procedures must be strictly followed according to their order of priority and this makes it systematic and scientific. READ MORE AT http://www.helium.com/items/1338864

How to write a research proposal?

There are lots of individuals who have the desire and enthusiasm to do a research study but do not have the ability to do so. This is because they lack the basic know-how on how to prepare a research proposal. Others even resort to asking someone to create the proposal for them. But for beginners, this is not a good idea because you are depriving yourself the opportunity to develop your capability in writing a research proposal. READ MORE AT http://www.helium.com/items/1338739

Things college professor usually love

For students, knowing their professor's likes and dislikes is a great advantage. It will help them cope up with their style of teaching and approach them easily. Plus, it can give them the opportunity to show their best in class and impress their professor to win good grades. Most professors announce the things they love as part of their classroom policy during the first day of school, but there are still some which are left unannounced and yet are expected from students. Read the details at http://www.helium.com/items/1335813

Things college professor usually hate

As college professor, a big task is upon your shoulder for the future of students will be based on your teachings. Aside from your educational expertise, it requires full determination and sincere concern in order for you to be effective. But although college professors are expected to have enough patience and understanding, there are still certain things that they consider a big no-no. READ MORE AT http://www.helium.com/items/1335794

Tips for defining education and career goals

Sometimes in spite of good position and high salary pay, people seem to be discontented with their job. Maybe because it still doesn't satisfy their career goals. But how can we achieve fully our career goals? Is there a secret to meet our desired career goals? I guess it will all start with our education. The type of education we choose to study will lead us to the kind of career goals we are aiming to acquire. READ MORE AT http://www.helium.com/items/1301534

The importance of early childhood education

Aristotle, the great philosopher said that the man's brain is like an empty box upon birth that needs to be filled with information. A child upon his birth needs to acquire knowledge using his perception. Usually this information which are considered informal knowledge can be derived from his environment. But formal knowledge can be learned from school aside from his parents. READ MORE AT http://www.helium.com/items/1301571