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Element Properties Notes
Transcript of Element Properties Notes
1 Element @ a Time
What does the periodic table tell you about the elements
Protons are the positively charged particles within an atom's nucleus.
Neutrons are also found in the nucleus. They have no charge.
The properties of an element is determined by the structure of the atom. This can best be described by using the periodic table.
Protons are positively charged particles.
Neutrons have no charge.
How does is all work together
Using the element given to you, let's determine some information about it.
Take a Look
Take a look...............................
Understanding how to read and determine information about each element is very important.
An atom is the smallest particle of an element that has all the properties of that element. Each element is made up of atoms that differ from those of every other element.
Negatively Charged Particles
Electrons are negatively charged particles. The mass of an electron compared to the particles in the nucleus is like a feather (electron) to an elephant (particles in the nucleus).
What's in the Nucleus?
The center of an atom is known as the nucleus.
The center of an atom consists of two different particles; the protons and the neutrons.
The center of an atom is called the
Electrons, located outside the nucleus in the electron cloud.
The atomic symbol, also known as the chemical symbol, is a code use to represent the element.
The atomic number is the number of protons in the nucleus of an atom.
The atomic mass is a total of the protons, neutrons, and electrons.
The reactivity of an element is dependent on the number of valence electrons that element has. Each atom has a series of electron shells. Each shell holds a different number of electrons.
The electrons in the last outer shell are called the valence electrons. These are what give an element its' reactivity.
Atoms tend to gain, lose, or share one ore more of their valence electrons to achieve a filled outer shell.
Notice the full outer shell. Which groups do you think are most reactive and why?
A chemical equation is a written representation of the process that occurs in a chemical reaction.
The reactants of a chemical equation are the elements are group of elements on the left of the yield (arrow) sign; the participants in the chemical reaction.
The product of a chemical equation is the group of element or elements on the right of the yield sign and are the result of the chemical reaction.