Chapter 4 Lesson 1 Today You Need: 4.1 Notes handout (glued in on the right side!) Pencil or pen 3 colored pencils, pens, or highlighters Right Side What is Matter? Anything that has MASS and takes up SPACE Examples of matter? The smallest unit of matter is the ATOM Right Side “Atom” From the Greek word atoma, meaning “INDIVISIBLE”. Left Side Think – Write From the Greek word atoma, meaning “indivisible”. Using this definition, predict why the atom was called the atom. {Complete Sentences!} My Prediction: Left Side Pair – Write Share with your partner. Write down their thoughts in a new color. My Prediction: My Partner’s Prediction: Right Side “Atom” From the Greek word atoma, meaning “indivisible”. Greek Philosopher Democritus could believed that you could only cut matter up a certain amount of times before it was too small to be divided. Right Side Parts of the Atom All Atoms are mostly EMPTY SPACE surrounding a tiny NUCLEUS. “subatomic particles” – particles that are SMALLER than an atom There are 3 main subatomic particles. Protons, Neutrons, Electrons Right Side Protons Use your first color to highlight or shade behind the word “Protons” on your handout. Symbol: P+ Charge: + 1 Mass ~ 1 amu Left Side Units What units do we use for measuring distance? What units do we use for measuring mass? Right Side Left Side Units What units do we use for measuring distance? Inches, centimeters, miles, kilometers, yards… What units do we use for measuring mass? Pounds, ounces, grams amu: ATOMIC MASS UNIT = for measuring mass Right Side Neutrons Use your 2nd color to highlight or shade behind the word “Neutrons” on your handout. Symbol: N Charge: 0 (Neutrons are Neutral) Mass ~ 1 amu Right Side Electrons Use your 3rd color to highlight or shade behind the word “Electrons” on your handout. Symbol: e- Charge: - 1 Mass ~ 0 amu Right Side AMU repeat What is amu? Atomic mass unit Use to measure mass of subatomic particles. Left Side Create a Chart Create a chart that shows the symbol, charge, and mass (amu) Left Side Create a Chart Create a chart that shows the symbol, charge, and mass (amu) Particle Symbol Charge Mass (amu) proton P+ +1 1 neutron N 0 1 electron e- -1 0 Lithium Atom: 3P+, 4N, 3 eUse your 3 colors: 1 color for Protons, P+ 2nd color for Neutrons, N 3rd color for electrons, e- Right Side Left Side Draw a new atom Draw Berylium, Be Be has 4 protons, 4 electrons, and 5 neutrons. Don’t forget to color-code the subatomic particles.