[Answer] Earth’s atmosphere is made up of several gasses, but which element makes up the majority of the air?

Step 1 : Introduction to the question "Earth’s atmosphere is made up of several gasses, but which element makes up the majority of the air?"

...CONTEST AND DETAILS & HOW TO ENTER: 1. This Contest Will Commence OnSat Oct 05 2019 09:24:32 GMT+0530 (IST)From 08:00:01 A.M. (IST) To 12:00:00 P.M. (IST) (“Contest Period”) 2. In Order To Be Eligible For The Contest, During The Contest Period You Must Sign-In To Or Sign-Up From An Account On The Amazon.In App (“Amazon.In App”). 3. Once You Have Signed-In To The Amazon.In App, You Can Participate By Navigating To The Page Where 5 (Five) Questions Will Be Posted During The Entire Contest Period.

[Answer] What element on the periodic table is named after the European capital where it was discovered in 1923?

Step 1 : Introduction to the question "What element on the periodic table is named after the European capital where it was discovered in 1923?"

...Hint :Metal

[Answer] 4. Fire alarms are a key element of a family's emergency preparedness planning. Which of these is the least important aspect of such alarms?

Step 1 : Introduction to the question "4. Fire alarms are a key element of a family's emergency preparedness planning. Which of these is the least important aspect of such alarms?"

...1. Proper location of alarms 2. Brand of alarms 3. Adequate number of alarms 4. Batteries tested and charged, if applicable Ideally, individual families, and you personally, should have a plan for disasters and other emergencies. Tip #11 is "Devise a personal and family disaster preparedness plan." You can find guidance on such plans at trusted internet sources. Fire in a home is always a danger. In addition to taking steps to prevent it, you should be prepared with home fire extinguishers in your kitchen, garage, and workshop. Your home should have an adequate number of fire alarms, which should be positioned properly. Check and replace batteries as needed. Develop and practice a fire escape plan, with alternatives. Be sure to have a meeting place outside of your home. Also important are carbon monoxide alarms, especially near your garage (if any). Stock up on emergency food, water, and medical supplies including needed medications. As the Tip says: "Are you prepared to stay at home, if necessary, for two weeks?" Do not overlook the importance of having primary and alternate means of communicating with your family members in case of disruptions in normal channels.

[Answer] Which element was discovered on the Sun before it was discovered on Earth?

Step 1 : Introduction to the question "Which element was discovered on the Sun before it was discovered on Earth?"

...CONTEST AND DETAILS & HOW TO ENTER: 1. This Contest Will Commence OnSat Sep 07 2019 09:24:32 GMT+0530 (IST)From 08:00:01 A.M. (IST) To 12:00:00 P.M. (IST) (“Contest Period”) 2. In Order To Be Eligible For The Contest, During The Contest Period You Must Sign-In To Or Sign-Up From An Account On The Amazon.In App (“Amazon.In App”). 3. Once You Have Signed-In To The Amazon.In App, You Can Participate By Navigating To The Page Where 5 (Five) Questions Will Be Posted During The Entire Contest Period.

[Answer] When was the newest element added to the Periodic Table?

Step 1 : Introduction to the question "When was the newest element added to the Periodic Table?"

...1. 1989 2. 1992 3. 2004 4. 2016

[Ans] What chemical element gives the blood of a lobster a bluish tint?

Step 1 : Introduction to the question "What chemical element gives the blood of a lobster a bluish tint?"

While humans and many other species have red blood, due to the iron in their hemoglobin, other animals have different colored blood. The bluish tint of a lobster's blood is due to the presence of copper found in the blue haemocyanin molecule in their blood. Hemoglobin, an iron-containing protein found in the blood of other animals—including humans—serves the same oxygen-transporting function but turns blood red. Some animals, such as the sea cucumbers, even have yellow blood. What could make blood yellow? The yellow coloration is due to a high concentration of the yellow vanadium-based pigment, vanabin.

[Answer] What chemical element gives the blood of a lobster a bluish tint?

Step 1 : Introduction to the question "What chemical element gives the blood of a lobster a bluish tint?"

...While humans and many other species have red blood, due to the iron in their hemoglobin, other animals have different colored blood. The bluish tint of a lobster's blood is due to the presence of copper found in the blue haemocyanin molecule in their blood. Hemoglobin, an iron-containing protein found in the blood of other animals—including humans—serves the same oxygen-transporting function but turns blood red. Some animals, such as the sea cucumbers, even have yellow blood. What could make blood yellow? The yellow coloration is due to a high concentration of the yellow vanadium-based pigment, vanabin.

[Answer] What is the only continent with a chemical element named for it?

Step 1 : Introduction to the question "What is the only continent with a chemical element named for it?"

...Europium is a chemical element with the symbol Eu. Europium is a ductile metal with a hardness similar to that of lead. Europium was isolated in 1901 and is named after the continent of Europe. Europium has no significant biological role and is relatively non-toxic compared to other heavy metals. Europium is one of the rarest of rare earth elements on Earth. French chemist, Eugene-Anatole Demarcay, is typically credited with the discovery of the element as he ultimately produced a relatively pure form of the rare earth metal in 1901.

[Ans] What is the only continent with a chemical element named for it?

Step 1 : Introduction to the question "What is the only continent with a chemical element named for it?"

Europium is a chemical element with the symbol Eu. Europium is a ductile metal with a hardness similar to that of lead. Europium was isolated in 1901 and is named after the continent of Europe. Europium has no significant biological role and is relatively non-toxic compared to other heavy metals. Europium is one of the rarest of rare earth elements on Earth. French chemist, Eugene-Anatole Demarcay, is typically credited with the discovery of the element as he ultimately produced a relatively pure form of the rare earth metal in 1901.

[Answer] What is the only continent with a chemical element named for it?

Step 1 : Introduction to the question "What is the only continent with a chemical element named for it?"

...Europium is a chemical element with the symbol Eu. Europium is a ductile metal with a hardness similar to that of lead. Europium was isolated in 1901 and is named after the continent of Europe. Europium has no significant biological role and is relatively non-toxic compared to other heavy metals. Europium is one of the rarest of rare earth elements on Earth. French chemist, Eugene-Anatole Demarcay, is typically credited with the discovery of the element as he ultimately produced a relatively pure form of the rare earth metal in 1901.

[Answer] 4. This metal is the fifth most abundant element in the earth's crust, and is an essential constituent of leaves, shells, bone, and teeth.

Step 1 : Introduction to the question "4. This metal is the fifth most abundant element in the earth's crust, and is an essential constituent of leaves, shells, bone, and teeth."

...1. iodine 2. calcium 3. phosphorous 4. zinc Calcium is perhaps best known for its numerous compounds. Common chalk is a compound containing calcium.

[Ans] What is the only metallic element that is liquid at room temperature?

Step 1 : Introduction to the question "What is the only metallic element that is liquid at room temperature?"

Mercury is the only metal that is liquid at room temperature. It also has the lowest melting point and boiling point of any other metal. Mercury is used to make thermometers, barometers and many other scientific instruments. However, mercury is a very toxic element and for safety reasons, consumer use of mercury in thermometers has become less common over the years. The symbol Hg that mercury is known by comes from its Greek name, hydrargyrum, which means "liquid silver" — to reflect its shiny surface.

[Answer] What is the only metallic element that is liquid at room temperature?

Step 1 : Introduction to the question "What is the only metallic element that is liquid at room temperature?"

...Mercury is the only metal that is liquid at room temperature. It also has the lowest melting point and boiling point of any other metal. Mercury is used to make thermometers, barometers and many other scientific instruments. However, mercury is a very toxic element and for safety reasons, consumer use of mercury in thermometers has become less common over the years. The symbol Hg that mercury is known by comes from its Greek name, hydrargyrum, which means "liquid silver" — to reflect its shiny surface.

[Answer] 10. All carbohydrates contain carbon, hydrogen and oxygen. All proteins contain carbon, hydrogen, oxygen and what other element?

Step 1 : Introduction to the question "10. All carbohydrates contain carbon, hydrogen and oxygen. All proteins contain carbon, hydrogen, oxygen and what other element?"

...1. Nitrogen 2. Fluorine 3. Sulphur 4. Chlorine They are the only main food component that contains an extra element.

[Answer] 3. Which element, other than fluorine, can help to prevent caries? You can find this element in eggs and in green beans.

Step 1 : Introduction to the question "3. Which element, other than fluorine, can help to prevent caries? You can find this element in eggs and in green beans."

...1. Arsenic 2. Molybdenum 3. Lead 4. Oxygen Molybdenum is a whitish metal with a very high melting point. It has the atomic number 42. Molybdenum is present in tooth enamel. Sources indicate that it may contribute to preventing caries and tooth decay. A region with low molybdenum concentrations in the soil could typically present a higher occurrence of oesophageal cancer. Sources of molybdenum include eggs, liver, green beans, sunflower seeds, lentils and cucumbers. Overexposure to molybdenum is toxic. Inhalation of molybdenum fumes can harm one's health more readily than overconsumption of foods containing molybdenum. Arsenic and lead are highly toxic. Don't use products containing arsenic or lead to brush your teeth. Oxygen is very reactive. Oxidation is one of the best documented forms of decay of solid structures.

[Ans] Diamonds, graphite and charcoal are all forms of which element?

Step 1 : Introduction to the question "Diamonds, graphite and charcoal are all forms of which element?"

Take a look at that gorgeous rock on your finger and then look at the lead tip at the end of a pencil. Believe it or not they are both formed from the same basic element, carbon. The difference is that the atoms in diamonds are more tightly packed together. Under just the right conditions carbon atoms can eventually turn into a diamond. And the next time your family goes to a barbecue you'll now know that the main ingredient of the charcoal is also carbon. Carbon forms a vast number of compounds, more than any other element. For this reason, carbon has often been referred to as the "king of the elements".

[Answer] Diamonds, graphite and charcoal are all forms of which element?

Step 1 : Introduction to the question "Diamonds, graphite and charcoal are all forms of which element?"

...Take a look at that gorgeous rock on your finger and then look at the lead tip at the end of a pencil. Believe it or not they are both formed from the same basic element, carbon. The difference is that the atoms in diamonds are more tightly packed together. Under just the right conditions carbon atoms can eventually turn into a diamond. And the next time your family goes to a barbecue you'll now know that the main ingredient of the charcoal is also carbon. Carbon forms a vast number of compounds, more than any other element. For this reason, carbon has often been referred to as the "king of the elements".

[Answer] 8. Which element was named after the Norse god of thunder?

Step 1 : Introduction to the question "8. Which element was named after the Norse god of thunder?"

...1. Thorium 2. Promethium 3. Mercury 4. Molybdenum The Norse god of thunder is Thor; he is also the god of war.

[Answer] which semantic element is best suitable for content like blog post that is self contained, independent and can be republished?

Step 1 : Introduction to the question "which semantic element is best suitable for content like blog post that is self contained, independent and can be republished?"

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[Ans] Which chemical element has the symbol K?

Step 1 : Introduction to the question "Which chemical element has the symbol K?"

Chemical symbols make up the Periodic Table of known elements. Each chemical symbol represents an abbreviation for the chemical element's name. Most come from the Latin name for the chemical. In the case of potassium, the letter "K" represents it on the Periodic Table. Sir Humphrey Davy discovered potassium in 1807. The name for the element comes from the Latin word "kalium." Potassium is from the mineral carnallite and is often used in making glass and soap. Source: ChemicalElements.com