Download
1 / 16
160 likes | 276 Vues
Jackson 5 10 /19-10/20. “Dress for success” means different things to different people. Why does it matter how a person dresses? Write until the time runs out explaining what “dress for success” means to you. This week at a Glance. Class News. CHS Sports.
E N D
Jackson 5 10/19-10/20 “Dress for success” means different things to different people. Why does it matter how a person dresses? Write until the time runs out explaining what “dress for success” means to you.
This week at a Glance Class News CHS Sports CHS FOOTBALL GAME @ Milan Friday 7pm GO CHARGERS!! • Lab Fee money DUE! • Do not forget about being in your seat before the bell rings, otherwise you are TARDY • Research Articles Due This week! • If you attend College/career night @BHS on Thursday evening you will get 10 points extra credit • Make sure you are heading/dating your notes EVERY DAY..their will be more notebook checks • Everyone needs to do a bell ringer
Presentations! Presenter’s Project your voice and speak clearly, behave appropriately when giving your presentations Audience Give the Presenters your full attention and do not disrupt them, remain quiet and be respectful
Chapter 2 -Chemistry
“Composition of Matter” Vocabulary page 31-34 • Matter- Anything that occupies space and has mass • Mass- The same quantity of matter an object has • What is the difference between the two?
Vocabulary Cont. • Elements-Pure substances that cannot be broken down chemically into simpler kinds of substances • Atom- The simplest particle of an element that retains all of the properties of that element • Nucleus-Central core of an atom • Proton- Positive electrical charge • Neutron- No electrical charge (neutral)
Vocabulary Cont. • Electron—Negatively charge particle • Compound- A pure substance that is made up of atoms of two or more elements • Chemical reactions-Process that leads to the transformation of one set of chemical substances to another. • Bonds-attachments to an atom
Vocabulary Cont. • Covalent Bond- Formation when two atoms share one or more pairs of electrons • Molecule-Simplest part of a substance that retains all of the properties of the substance and that can exist in a free state. • Ion-An atom/molecule with an electrical charge • Ionic Bond- when + and – charges attract each other
Mass/Matter • What’s the difference? • Mass is a measurement of how much matter is in an object • Your mass is the same wherever you are--on Earth, on the moon, floating in space--because the amount of stuff (matter) you're made of doesn't change.
Elements • Over 100 elements have been identified • 90%+ of the mass of all kinds of living things is composed of combinations of O (Oxygen), C (Carbon), H (Hydrogen), N (Nitrogen) • Each element has a different chemical symbol (usually 1 or 2 letters from the name of the element in Latin
On your Dry erase Boards…. You will have 40 seconds to give me the correct answer. The questions will pop up on the wall READY… SET.. LEGGGGGOOO!!!
1) • What is an Element?
2) • The Periodic Table of elements has been modified over the years to have a “cleaner look” and be more appealing to the eye, since there are so many difference types of charts how can you determine the difference between the atomic mass and the atomic number if they are not in their “original sequence”?
3) • Looking at the Periodic table of elements that is on the wall in class which Element has an atomic # of 86, what color is this element? Why do you think it is that color?
