DO NOW: What makes up the world? What’s inside every phsyical thing we see? REMINDERS FOR THE WEEK Homework is due on FRIDAY Do Now Sheet is due on FRIDAY Small Quiz on Material from the week on FRIDAY OUR FIRST UNIT: CHEMISTRY! Objective for the day: You will be able to understand what an atom is and understand the different subatomic particles. Quiz on Friday on material from the week! LET’S THINK ABOUT THIS: HOW BIG IS AN ATOM? Take this piece of paper and discuss with your partner how many times you think you’d have to cut the paper in half in order to make it the size of an atom. You can fold the paper What are your guesses? GUIDED NOTES For guided notes, fill in the blanks on your notes with the BOLDED and UNDERLINED words on the board. THIS IS THE IMPORTANT STUFF Listen carefully, pay close attention WHAT IS MATTER? Matter is anything that has MASS and takes up SPACE WHAT ARE ATOMS? MATTER is made of ATOMS. ATOMS are the basic building blocks of life. They are the SMALLEST part of matter. WHAT DO YOU SEE? . This dot holds over 4 million atoms! **ATOM FACTS** It would take you 500 years to count the number of atoms in one grain of salt! One strand of human hair is one million atoms in width. SUBATOMIC PARTICLES Atoms are made of THREE basic SUBATOMIC PARTICLES (parts) They are: Protons Neutrons Electrons SUBATOMIC PARTICLES The neutrons and protons are located in the NUCLEUS which is in the center of the atom The electrons are located around the NUCLEUS Neutrons have a ____________ charge. They are LARGER. Protons have a ______________ charge. They are LARGER Electrons have a ______________ charge. They are SMALLER. WHERE IS MOST OF THE MASS/WEIGHT OF THE ATOM? QUICK VIDEO: Video: http://app.discoveryeducation.com/techbook2:conc ept/view/guidConceptId/0bb0abd6-ff2a-469e-bce4855bb83590cc/guidUnitId/e88cf548-8791-48c39cd8-8cac59c61950#/tab=model-lessontab&page=1&subTab=session2 SUBATOMIC PARTICLES The number of PROTONS and ELECTRONS are equal! So, the atom always has a NEUTRAL charge. PRACTICE!: GROUP WORK Now, practice on your own. Low voices to discuss answers We will go over the answers together! EXIT TICKET 1. 2. What is the building block of all matter on Earth? List the three things are atoms made of 1. 2. 3. What is the charge of each of these subatomic particles? Where are each of these subatomic particles located in the atom? Which two subatomic particles always equal each other?