Period, in physics, the interval of time it takes for a motion to repeat. Such motion is called periodic motion and is performed, for example, by a rocking chair, a bouncing ball, a vibrating tuning fork, a swing in motion, Earth in its orbit around the
Radium is a radioactive chemical element that is the heaviest of the alkaline-earth metals of the periodic table. Radium is a silvery white metal that does not occur free in nature. Its most characteristic property is its intense radioactivity, which cau
Location of H on the Periodic Table Hydrogen Atom Properties Hydrogen Uses Hydrogen Facts Lesson Summary Frequently Asked Questions What is hydrogen made of? Hydrogen is an element, so it is a pure substance. Its atom is extremely simple with only one electron and one proton. ...
Ch 6. The Periodic Table of Elements Ch 7. The Representative Elements of the... Ch 8. Nuclear Chemistry Ch 9. Bonding for High School... Ch 10. Phase Changes for Liquids and... Ch 11. Gases in Chemistry Ch 12. Solutions in Chemistry Ch 13. Stoichiometry and Chemical... Ch 14. ...
These properties make the metal desirable in jewelry, coins, and art. About a half dozen metals near silver in the periodic table are also precious metals. These include gold, platinum, palladium, rhodium, and indium. Silver has been used by humans for thousands of years. It often occurs ...
Tantalum is a transition metal in Group 5 (VB) of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another. Tantalum is one of the most inert metals known. An inert material is one that does not react with most other chemicals. Most...
Slash: Learn the meaning, definition and types of slashes in the article. Also learn how to use slashes in writing by going through the examples given.
The truth table below shows how several functions of A and B depend on the values of A and B. In the table, “T” and “F” stand for “true” and “false,” respectively. ABnot-AA or BA and BA ⇒ BA ⇔ B T T F T T T T T F F T F F F F T T T F T F F ...
The cyberpunk story where major Artificial Intelligences map to the knights of the Round Table. The epic story where the moons map to the five occult elements (air-earth-water-fire-spirit). The horror story where the main character moods map to the four fundamental forces (electromagentism-gr...
phase. In the case of liquid to gas phase change, this amount of energy is known as theenthalpy of vaporization(symbol ∆Hvap; unit: J), also known as the(latent) heat of vaporizationor heat of evaporation. As an example, see the figure, which describes the phase transitions of water...