Published on March 14, 2014
Atoms Their structure and the properties of elements An element smallest posible piece… Miss Sofia Paz
First: Different elements or compounds have different properties: States (luquid, solid, gas, plasma) this properties depend on the atoms of the elements! MADE UP OF SUBATOMIC PARTICLES: -PROTONS(+) -NEUTRONS -ELECTRONS(-) ATOM: Smallest possible piece of an element (without loosing their properties)
The attraction of the negatively charged electrons and the positively charged protons keeps the electrons close to the nucleus.
How this subatomic particles form an ATOM? -NUCLEOUS: NEUTRONS, PROTONS(+), -CLOUD OF ELECTRONS (-) The attraction of the negatively charged electrons and the positively charged protons keeps the electrons close to the nucleus. Electrons have less mass than neutrons and protons.
NOT constantConstant ATOMIC NUMBER (Z)( NUMBER OF PROTONS) # of # of The number of protons is constant in each element The atom is electrically neutral, positive charges are balanced with the negative charges. NO two elements have the same atomic number the number of protons = the Atomic Number(Z)
ISOTOPES (when the number of neutrons change) Alternate forms of elements (always same proton number but different neutron number) Why C14, C13, C12??? Is the NUCLEAR NUMBER: NUMBER OF PROTONS + NUMBER OF NEUTRONS
RADIOACTIVE ISOTOPE: HOMEWORK FOR NEX CLASS! What are radioactive isotopes and What uses does they have? CONCEPT :CHEMICAL PROPERTIES ARE BASED ON STRUCTURE OF ATOMS
ElECTRONS AND REACTIVITY: Electrons properties: -amount of energy -how thigly they are held by protons Depending on this properties electrons belong to differents energy leves: I energy level can hold up to 2 electrons II energy level can hold up to 8 electrons III energy level can hold up to 18 electrons HOW DOES ATOMS STRUCTURE DETERMINE HOW IT REACTS??
CONCEPT :CHEMICAL PROPERTIES ARE BASED ON STRUCTURE OF ATOMS I energy level :2 electrons II energy level: 8 electrons III energy level : 18 electrons
ATOM SONG! 3.21 MIN https://www.youtube.com/watch?v=O5iaw5WNuB0
CONCEPT :CHEMICAL PROPERTIES ARE BASED ON STRUCTURE OF ATOMS Element/ isotope Atomic Number Protons Neutrons Total electrons (same number ofprotons+) Electrons in the highest level 12C 6 14C 14N 7 16O 8 P 15 15 S 16 16
Just howsmall is an atom?? http://www.youtube.com/watch?v=yQP4UJhNn0I DOGS TEACHING CHEMSITRY http://www.youtube.com/watch?v=addK0b2Isw8
Elements and atoms. Elements and atoms; ... you can break its structure. ... You could change the properties of that element,
1. Structure and Properties of the Atom 1.1 Atoms: ... represents an atom of an element in Group VIII (the Inert gases). (g) ...
STRUCTURE OF THE ATOM. ... The chemical properties of isotopes ... time required for half of the atoms of an element to decay into stable ...
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.  Every solid, liquid, gas, and plasma is ...
Elements and Atoms. ... into combination with other elements. Structure of the atom ... properties of each element are strongly influenced by ...
Properties of the Elements Properties of an ... a collection of atoms or molecules of the element. ... the electronic structure of the element, ...
Material Properties. Standards. ... ATOMS AND ELEMENTS. ... The graphic below illustrates this point by showing the atoms of two elements in the containers ...
Some of the important properties depend on ... The basic building block of any substance is the atom. Every element and ... Atom: Atomic structure : 1:
Chemical properties. Chemical properties of elements and compounds. ... Atoms of the same element that differ in atomic mass are called isotopes.