Atom Ion Skill and Drill…JUST DO THE ATOM AND ION SECTIONS! Activity Warm Up…. Atom Ion Skill and Drill…JUST DO THE ATOM AND ION SECTIONS! P 24 Date Session # Activity Page # 9/26 9 Warm up 21 Subatomic Particle Numbers can change Notes 22 Edible Atoms Lab This is turned in for a grade, you will get it back later 23 9/28 10 Ion/Isotope Skill & Drill warmup 24 Isotope Notes 25 Isotope Practice 26 Atomic Structure Gallery Walk 27 Homework: Atoms Family Album Due 10/4

8.P.1 Understand the properties of matter and changes that occur when matter interacts in an open and closed container. 8.P.1.1 Classify matter as elements, compounds, or mixtures based on how the atoms are packed together in arrangements.

TLW explain how an atom’s subatomic particle configuration changes to become stable by taking notes and modeling the changes in diagram……..

How are subatomic particles arranged? Bohr Model of the atom: All of the protons and the neutrons The 3rd ring can hold up to 8 e- 10P 11N The 1st ring can hold up to 2 e- The 2nd ring can hold up to 8 e- ***once a ring is full, it will not give up any electrons in the full ring

Valence electrons determine: how an atom bonds with other atoms (or if it will bond at all). atom’s reactivity (how easily it bonds with other elements.) Atoms with a complete set of valence electrons are stable. They don’t bond with other atoms: don’t gain/lose electrons, don’t share electrons. Word origin/stem late Middle English: from late Latin valentia ‘power, competence,’ from valere ‘be well or strong.’ P 19

p 22 Matter is neutral as long as an atom has the same number of protons (+) and electrons (-)…BUT it isn’t stable unless it has a full valence ring. The OCTET rule: elements will gain or lose electrons in order to have a full valence shell of eight electrons.

Negative Ions (F-1) Anion Gain/Take an electron = negative ion (negative charge) # protons < # electrons A negative ion is written like this: Br-1 The charge is written like an exponent in math.

Positive Ion (Li+1) Cation Lose/Give an electron = positive ion (positive charge) # protons > # electrons A positive ion is written like this: K+1 The charge is written like an exponent in math.

Ions on Your Own Complete this section on your own. Turn it in when you are finished. Add to your venn diagram on P13 when you are finished.

Isotopes are atoms of the same element that have a different number of neutrons. EXAMPLE: Carbon-12, Carbon-13, Carbon-14 Different # of neutrons = different atomic mass Adding or losing a neutron is like gaining or losing weight…same identity, different mass!

Isotopes p 24 Neutrons are the “glue” that keep the nucleus together. Like forces repel each other, like the positive ends of a magnet. Neutrons keep the nucleus together. Isotopes are atoms of the same element that have different numbers of neutrons.

Isotopes Isotopes of an element are identified by the element symbol and mass. For Example: Uranium (U, element 92) has many isotopes. Each isotope of Uranium has 92 protons, but has a different number of neutrons, so each isotope has a different mass. U-233 (92 protons + 141 neutrons = mass of 233) U-234 (92 protons + 142 neutrons = mass of 234) U-235 (92 protons + 143 neutrons = mass of 235) U-236 (92 protons + 144 neutrons = mass of 236) U-238 (92 protons + 146 neutrons = mass of 238)

Isotopes: As A Class Name of Element Symbol Atomic # Atomic Mass Protons Electrons Neutrons 1. Carbon-12   C-12 2. 11 3. 13 4. 14

Atomic Structure Gallery Walk You will have 1 minute at each station. Silent Stations

Homework: Atoms Family Album Create a "family" album for an atomic family with a page/section for each member listed below. This is an ANALOGY (like Cell City in 7th grade). You need to explain the properties & characteristics of the particle AND how your analogy is similar. Be creative and think outside the box (is your atoms family a band, sports team, TV show, ....?). You can fold the album together in a way that you would like, but it must have room for all 6 family members . YOU MUST INCLUDE: a representative drawing/printed picture and a description of the following family members: 1. PROTON 2. NEUTRON 3. ELECTRON 4. ION--negative anion (-) 5. ION--positive cation (+) 6. ISOTOPE