Another surprising example of chemistry is a soap that is being used by people for quite a long time now. Crude soap is made by humans by mixing animal fats, ashes, oil-based grease, and cleaner. It's quite amazing how something that messy dirty makes us clean. The answer lies in the...
What is an element? What is the periodic table? And what does quantum mechanics con- tribute to the question? Foundations of Chemistry, 14(1), 69-81.Scerri ER, 2012 What is an element? What is the periodic table? And what does quan- tum mechanics contribute to the question? Found. ...
Chemistry is a subject which needs hard work. Alright, let's break it down into four easy-understood parts for you.1.___Before a class or a test, it's good to get ready. Learn to read and understand the periodic table(周期表)(化学元素周期表), review your notes, and make sure you...
What is Atom? An atom consists of a fixed number of protons, electrons and neutrons, which makes each element unique. Protons and neutrons together make up thenucleus of an atomwhile the electrons orbit around it. In the periodic table, a chemical element is represented by a fixed format :...
Some chemistry examples in everyday life include the burning of gasoline (a chemical reaction), sunscreen (chemical that reflect harmful ultraviolet light), and even breathing (the extraction of oxygen gas from the air). What is chemistry in simple words? Chemistry is the study of the substances...
Chemistry is a physical science, which means it doesn't involve "living" things. One way a lot of people practice chemistry regularly, perhaps without realizing it, is in cooking and baking.(Image credit: Shutterstock) The five main branches of chemistry ...
What are elements in chemistry? How to find the atomic number of elements? What element is the most reactive in the periodic table? Explain why. Which element below has five valence electrons? a. Si b. Se c. S d. I e. Sb What are the elements that make up Group 18 in the perio...
Platinum is a naturally occurring chemical element that is actually about 30 times rarer than gold, according to Jenny Luker, president of Platinum Guild International USA (PGI), a marketing organization for the platinum jewelry industry.
NCERT solutions for CBSE and other state boards is a key requirement for students. Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET & IIT JEE. Get PDF and video solutions of IIT-JEE Mains & Advanced previous year pap...
What is the electron configuration for iron? What chemical elements make iron rust? What is classification in chemistry? What is the flammability of iron? What is the average atomic mass of iron? How are metallic minerals classified? What is the ground state shorthand notation for iron (Fe)?