Elemental Essentials Anchor Chart Periodic Table Essentials
Understanding the Map of the Elements
The Basic Layout
G
GROUPS (Columns)
Elements in the same group have the same number of valence electrons and share similar chemical properties .
P
PERIODS (Rows)
Elements in the same period have the same number of occupied electron shells (energy levels).
Reading an Element
11 Na Sodium 22.99
← ATOMIC NUMBER (# of Protons)
← SYMBOL
← NAME
← ATOMIC MASS (p+ + n0)
The Big Three Trends
Atomic Radius Increases
Electronegativity Increases
IONIZATION ENERGY
Energy needed to REMOVE an electron. Harder to remove when closer to the nucleus!
Electronegativity
The "Ability to Pull" electrons in a bond. Flourine is the king of pull!
Atomic Radius
Distance from nucleus to outer shell. Gets bigger with more shells!
Metals
Shiny, Malleable, Good Conductors, LOSE electrons.
Metalloids
The "Staircase." Properties of both metals/non-metals.
Non-Metals
Dull, Brittle, Poor Conductors, GAIN electrons.
Group 1: Alkali Metals (Very Reactive) Group 17: Halogens (Reactors) Group 18: Noble Gases (Stable/Inert)
Periodic Power Slides Intervention Session 04
PERIODIC POWER
Mastering the trends and organization of the elements.
UNIT: ATOMIC STRUCTURE
1 The Two Navigators
Groups
Vertical Columns (1-18)
Same # of Valence Electrons
Similar chemical behavior
Periods
Horizontal Rows (1-7)
Same # of Electron Shells
Energy level increases down
Atomic Radius
Size Trend
Definition:
The total distance from an atom's nucleus to the outermost orbital of electron.
INCREASES down a group
DECREASES across a period
Li
Small
Na
K
Larger
Adding shells = Bigger Atoms!
The "Electron Tug-of-War"
Ionization Energy
The energy required to REOVE an electron.
Harder to pull near the top right!
Electronegativity
How strongly an atom ATTRACTS electrons in a bond.
Fluorine is the winner!
F
Trends INCREASE as you move UP and RIGHT.
Quick Check
Q: Which has a LARGER atomic radius?
Sodium (Na)
OR
Chlorine (Cl)
*Hint: Think about which way we move across the period!
Table Tracker Worksheet Table Tracker
Periodic Trends Practice
Name:
Date:
Part 1: The Trend Map
Draw arrows on the schematic below to show where each trend INCREASES .
TREND A: ATOMIC RADIUS
TREND B: ELECTRONEGATIVITY
TREND C: IONIZATION ENERGY
Part 2: Head-to-Head
For each pair, circle the atom that fits the description. Be ready to explain WHY .
1. Higher Electronegativity:
Nitrogen (N)
Fluorine (F)
2. Larger Atomic Radius:
Lithium (Li)
Potassium (K)
3. Lower Ionization Energy:
Sodium (Na)
Magnesium (Mg)
Part 3: The "Why" Factor
Explain why Atomic Radius increases as you move DOWN a group:
Explain why Noble Gases (Group 18) generally have 0 electronegativity:
Periodic Power Teacher Guide Teacher Guide
Lesson: Periodic Power (Tier 2 Intervention)
Focus Group
11th Grade Chemistry (Targeted Intervention)
Duration
30–45 Minutes
Goal
Mastery of Periodic Trends
Slide-by-Slide Facilitation
Slide 2
Groups vs. Periods
Ask: "What do everyone in a 'Group' have in common besides their column?" (Valence electrons). Stress that valence electrons dictate the personality of the element.
Slide 3
Atomic Radius
Use the "Snowman Rule": Snowman gets bigger at the bottom. Across a period, the snowman falls over and gets skinnier (because protons pull electrons tighter).
Slide 4
Electronegativity/Ionization
Concept: "Greediness." Non-metals are greedy for electrons (Electronegativity). High IE means they "don't let go." Metals are "givers" with low IE.
Common Misconceptions
The "Bigger is Better" Error:
Students often think bigger atoms have more electronegativity. Remind them: Closer to nucleus = Stronger pull.
Noble Gas Confusion:
Students apply Electronegativity to Noble Gases. Remind them: Noble Gases are already full; they don't want to bond!
Differentiation Strategies
For Struggling Learners
Use physical nesting dolls or cups to represent shells. Add a cup (shell) as you move down the group to show radius increase.
For Quick Mastery
Ask them to predict trends for Ionic Radius (Cations vs Anions) using the same logic as Atomic Radius.
Periodic Power Intervention Guide Tier 2 Content
