[B]Nitrous oxide and sulphur dioxide Fast Fact: Bee stings are acidic. Fast Fact: The world's largest glow stick was 8ft 4 inches tall! [A]Benzamin Franklin Chemistry objective Question on May 19, 2017: Only put up short Question chemistry in Msc, I just realized Is there a sort of irony in this satire because the song "I Am the Very Model of a Modern Major General" (the original song) is really about criticizing education and merely memorizing words and useless facts, and this song is basically used just to memorize the names of the elements?. Answer: Same mass number but a different atomic number. Click Here to Visit all updated Chemistry Questions 1. [C]Oxygen In this case, the match head contains potassium chlorate - an accelerant that speeds up the reaction. $(function(){$("#butToggle7").click(function(){$('#dvt7').toggle(500);});}); Show Answer This allowed him to predict what those undiscovered elements would be like. If an atom gains an electron, it forms a: positively charged ion negatively charged ion covalent bond double bond. Thanks for sharing! I am a huge Mythbusters geek also! A covalent bond is the result of: transferring electrons transferring protons sharing a proton sharing an electron . 17. ), Acids are characterised by containing hydrogen ions when in solution. A mento is actually not as smooth as it appears. The glow in a glow stick is the result of two chemicals reacting together and giving off light energy in a process called chemiluminscence. Whilst this is instantly recognisable as an atom, no atom actually looks like this! Click Here to Visit all updated Chemistry Questions 7. You can figure out what happened after that . A living organism is made elements and we were able to cover what makes up an element. 4. About this quiz: All the questions on this quiz are based on information that can be found at Chemistry: Lab Equipment. [C]Tetra Ethyl Lead Chemistry Questions and Answers Test your understanding with practice problems and step-by-step solutions. 1. This is due to the substitution of sugar with the sweetener aspartame. [D]Urea Explanation are given for understanding. The number of electrons in an atom is equal to the number of protons - this means that atoms have no overall charge. (UI = Universal Indicator - a solution that changes colour depending on the pH of a substance. All the best! When you snap the stick, the glass vial breaks and the two chemicals mix and react. i love chemistry and about the hub its extremely grateful and amazing. GK, General Studies, Optional notes for UPSC, IAS, Banking, Civil Services. This allows the match to catch. [B]Ammonium nitrate As I said in the forum - many of the ideas came from my fellow hubscribers so it is really a team effort! If two metals come out equal based on this, we look at how fast they react - just like using points difference in a sporting league table. Ozone is a special molecule of oxygen: O3. Aliquot: It is a measured sub-volume of the original sample; Diluent: Material with which sample is diluted; 2) … Find helpful Chemistry questions and answers on Chegg.com. You are here: Home / Latest Articles / Science & Education / Top 22 Chemistry Interview Questions & Answers. [D]Helium The Reactivity Series of metals is a type of chemical league table. $(function(){$("#butToggle3").click(function(){$('#dvt3').toggle(500);});}); Show Answer Chemistry is sweet especially in experiments. The ozone layer absorbs around 99% of this harmful radiation, and is not used up in the process, so why are there giant holes in this shield? 2. I love chemistry. Get yourself ready for the job openings by visiting any Analytical chemistry interview job questions and answers page. [C]Calcium nitrate as you provide a great source of leaning and many of us can learn from this article about chemistry. [A]Sulphonate method [B]Nitrate method [C]Zeolite method [D]None of these. $(function(){$("#butToggle6").click(function(){$('#dvt6').toggle(500);});}); Show Answer Under a microscope you can see that there are millions of tiny craters on the surface. The table shows the electrical charge and relative mass of the three major sub-atomic particles. It is my dream job :), Thanks for the comment, and for reading my hub. You can change your answer if you want. These were nothing more than sticks impregnated with sulphur. The video shows the reactions of the first four metals in group I: Lithium, Sodium, Potassium and Rubidium. Ozone gases are our protection against UVB radiation. Fast Fact: Diet coke works best because the surface tension in the drink is much lower than regular coke - this allows bubbles to form more easily. Bunsen Burners, test-tubes filled with brightly coloured fluids, goggles and strange smells; this is the world of chemistry - at least to someone starting high school! A stylised Lithium atom. 16. [A]Lead tetrachloride First Published: April 13, 2012 | Last Updated:February 9, 2019. The Periodic Table is how scientists have organised the 100+ elements that make up all matter. It was almost an I Love Lucy moment. Fast Fact: All the letters of the alphabet are used in the Periodic Table, except J. [A]Nitrogen [B]Carbon dioxide Fast Fact: The word Atom comes from the Greek word for 'indivisible' - ironic, seeing as we know atoms are made of even smaller subatomic particles. Online Chemistry Questions and Answers – Basic Chemistry Part 2 (26-50) 26) The largest number of molecules is in (a) 36 g of water (b) 28 g of carbon monoxide (c) 46 g of ethyl alcohol (d) 54 g of nitrogen pentoxide Answer: A. Class 11 Important Questions Chemistry Chapter 1 Some Basic Concepts of Chemistry. This gives them a pH of less than 7. Which among the following methods can be used to remove the permanent hardness in water due to calcium or magnesium. The younger one is a Myth Busters fanatic as well as constantly wanting to know how things work, so I will be pointing her to this hub. Basic Chemistry introduces students to the essential scientific and mathematical concepts of general chemistry. 9. This damaging radiation is emitted by the Sun and is extremely dangerous. I run a 'fireworks' science lesson usually once a year with my pupils to demonstrate how fireworks get their colour - it is very popular! 10. Who among the following had given the Atomic Theory? Instructions: To take the quiz, click on the answer. Glow Sticks are particularly useful when light is needed but sparks could be deadly. This sits inside other chemicals (usually hydrogen peroxide) contained by the plastic tube. 4. I had never considered how glow sticks work (although my kids love them), but it sounds very cool. Match heads are made using phosphorus - a highly combustible element - that catches fire due to the friction caused when striking the match. If there is no chemical reaction or transfer of matter form one part of the system to another is called Chemical equilibrium. Chemistry is the study of the matter that makes up our universe, the energy that powers it, and how these two interact. @Amy: I'm glad you enjoyed the hub. The different colours are created using different chemicals, and one of two different chemical reactions: incandescence (light created through heat) and luminescence (light without heat). [A]Sulphonate method Ozone is one of those weird chemicals - when produced at sea level (usually in car engines) it is highly toxic, but without it life as we know it could not exist. So let us answer the following science quiz. The circle next to the answer will turn yellow. Science is also very important from an exam point of view. $(function(){$("#butToggle8").click(function(){$('#dvt8').toggle(500);});}); Show Answer Basic Chemistry Questions & Answers. Safety matches are slightly different. The burst was over 1 kilometre across. We use metals for many jobs in our technological world and sometimes a metallic element just won't cut it. [D]Helium From a slightly more down-to-earth perspective, everything from fireworks to cleaning products to paint is chemistry. @Melovy: At least half of the questions came from a question box I gave my Year 7 pupils in lesson for inspiration, so hopefully it is relevent to your kids! The ozone hole is largely over the Antarctic and is between 21 and 24 million square kilmoetres in size. This looks like just the sort of thing my kids will love. The pH scale is used to measure how acid or alkali a substance is: The pH of an acid is determined by the concentration of Hydrogen ions (H+) the substance has when in solution. There are two more metals in this group: Caesium and Francium. Which among the following is popularly called Hypo? About this quiz: All the questions on this quiz are based on information that can be found at Chemistry: Chemical Reactions. Each of these provides a nucleation site for carbon dioxide gas to form. For webquest or practice, print a copy of this quiz at the Chemistry: Lab Equipment webquest print page. Certain mixtures are even more impressive. H = H – H is the formula used to determine a ______________. Rhys Baker teaches science at Arthur Mellows Village College in Peterborough, UK. For webquest or practice, print a copy of this quiz at the Chemistry: Chemical Reactions webquest print page.

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