Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
What is Matter? Anything that can be smelled, tasted, touched… Has and (takes up space) Matter exists in some or phase Most common are solid, liquid, gas. But non-newtonian, & plasma are often used Matter is made up of word ATOM comes from Democritus. It means “ . The ” Atomic Theory: It is thought that atoms are made of . Most common particles are: - has a positive Charge - has a neutral charge; has both positive and negative attributes - has a negative charge Atom Smallest part or piece of matter that still has the properties of matter : Positively charged particle; largest of three particles; symbol is : Neutrally charged particle; has both positive and negative charges; slightly smaller than proton; symbol is : Negatively charge particle; 2000 times smaller than proton; symbol is Atomic Structure: Proton Nucleus Neutron Electron Electron Cloud Periodic Table First organized using the known properties from other chemists like Stanislao Cannizzaro, Dmitri Mendeleev created the table of elements in 1869 of elements Organized horizontally Indicates # of electron levels of elements Organized vertically Indicates # of electrons in outer cloud (# of P+) (Often from Latin or Greek) (1st letter is upper case, 2nd is lower case) (# of P+ & N=) # of ___________ in each cloud 7 N Nitrogen 14.0067 2 5 Q: How can we calculate the # of Neutrons? Bonding: Atoms join together to form molecules of a compound through bonding. The most common way to bond is by sharing . The first three periods of elements are the easiest to understand. The most eheld in the outer cloud of these elements is . In order to become more stable, elements will share e-. Na Cl