Grab binders handouts begin the Do Now 124

Grab binders & handouts, begin the Do Now 1/24 DO NOW 1. What 2 subatomic particles make up the nucleus of an atom? 2. How is the mass number calculated? 3. What is an isotope? 4. An isotope of Chlorine (Cl) has an atomic mass of 33. Write both forms for this isotope. 5. What isotope is formed if an atom has 19 protons and 21 neutrons?

• Directions: Radiation! In your groups… -Set up a note catcher as shown on the board: -1 st box = what you know about radiation -2 nd box = radiation cons -3 rd box = radiation pros -Each pick 1 of the articles found in the folder -After reading your article add any new thoughts to the pros/cons of your groups note catcher

Setting the Purpose • Reading purpose: - What makes an atom/isotope stable versus unstable? - What makes an element radioactive? • On your own… read through the text highlighting any important information and summarizing the connection between key info and the reading purpose

How does drawing connections help to identify important text and understand the purpose?

Nuclear Chemistry • Reading Purpose: Take 5 min to read & determine the following… - Define radiation - What makes an element radioactive? - What are the 3 types of radiation?

Radiation: Key Points • Radiation/Radioactive Decay: When an atom emits particles and/or energy * Interesting Uses… - Archaeological carbon Dating - Glow in the dark paints - Cancer treatment - Smoke Detectors

Radiation: Key Points • Nuclear Transmutation: When an element decays into a different element • Radiation Types: • Alpha Radiation (emits a Helium nucleus, mass of 4, positively charged, cannot penetrate skin) • Beta Radiation (emits an electrons, no mass, negatively charged, partially penetrates skin) • Gamma Radiation (rays, no mass, penetrates skin)

Radiation: Key Points • Nuclear Reactions: reactant product + emitted radioactive particle starting isotope ending isotope * Track the total p+ and n 0 found on each side of the arrow

Exit Ticket #3 Complete Exit Ticket 3 to the best of your abilities on your own & without notes. When finished record your HW in your HW tracker and place in your HW folder! Check out with Ms. Herndon

Do you have it yet? In order for elements from the 2 nd column of the Periodic Table to become “happy” they will… a. gain 2 electrons b. gain 6 electrons c. lose 2 electrons d. lose 6 electrons

Do you have it yet? In order for elements from the 6 th column of the Periodic Table to become “happy” they will… a. gain 2 electrons b. lose 6 electrons c. lose 2 electrons d. gain 6 electrons

Do you have it yet? Which of the following are true in regards to CATIONS? I. They are negatively charged II. They have more protons then electrons III. They form when electrons are gained IV. They form when electrons are lost a. I, III b. II, IV c. II, III d. I, III

Do you have it yet? Which of the following is NOT true in regards to ANIONS? a. Anions have more electrons than protons b. anions for when an atom loses electrons c. Anions are negatively charged d. Elements on the right side of the periodic table for anions, while elements on the left side of the periodic table do not

Do you have it yet? How many electrons does Oxygen need to gain in order to be happy? a. 8 b. 16 c. 2 d. none, Oxygen must lose electrons to be happy

Do you have it yet? Which of the following properly identifies the ion that Phosphorous will form? a. P+3 b. P+5 c. P-3 d. P-5

Do you have it yet? Which of the following properly identifies the ion that Barium will form? a. Ba-6 b. Ba-2 c. Ba+6 d. Ba+2

Do you have it yet? An element has 8 protons and 9 neutrons. Which of the following choices best represents this isotope? a. Oxygen - 16 b. Fluorine - 16 c. Oxygen - 17 d. Fluorine - 17

Do you have it yet? An isotope of Copper (Cu) has an atomic mass of 62. Which of the following choices best represents this isotope? a. Copper - 63 b. Copper - 64 c. Copper - 62 d. Copper – 63. 55