Warm UpWarm Up 9-23-159-23-151.1. What is the difference between group and What is the difference between group and

period on the periodic table?period on the periodic table?

2.2. How are elements arranged on the How are elements arranged on the modern periodic table?modern periodic table?

3.3. Who’s Mendeleev?Who’s Mendeleev?

HomeworkAgenda-Take Test unit 2-Activity Breaking the code-Notebook check Unit 2-Notes Unit 3-2

Test Unit 2Test Unit 2 Review/Study for 10 minutes (unit 2)Review/Study for 10 minutes (unit 2) 23 questions, 2 free response23 questions, 2 free response

Do not write on the testDo not write on the test Record the Record the free responsefree response

answers answers on the back of on the back of your scantronyour scantron

Activity Breaking the codeActivity Breaking the code

Arrange your cards (elements) Arrange your cards (elements) according to the periodic tableaccording to the periodic table

Look for commonalities on why Look for commonalities on why elements are in the same groupselements are in the same groups

Have your notebook out - I’ll check for Have your notebook out - I’ll check for unit 2 while you’re doing the activityunit 2 while you’re doing the activity

Warm UpWarm Up 9-25-159-25-151.1. Element Al and Ar are in the same______Element Al and Ar are in the same______

2.2. How many valence electrons are in Ca and How many valence electrons are in Ca and Ga element?Ga element?

3.3. What’s wrong with this model of the What’s wrong with this model of the carbon atom?carbon atom?

HomeworkOct 1 - Quiz Unit 3

Agenda-Go over Unit 2 Test-Notes Unit 3-2-Activity Trends

Unit 2 TestUnit 2 Test In the golden penny lab, the reason why In the golden penny lab, the reason why

the penny turned gold is becausethe penny turned gold is because The metallic gold appearance achieved by The metallic gold appearance achieved by

coating the penny with zinccoating the penny with zinc The zinc and hydroxide solution turned the The zinc and hydroxide solution turned the

penny silver then goldpenny silver then gold Zinc combined with copper will give an alloy Zinc combined with copper will give an alloy

brass with the yellow colorbrass with the yellow color The high heat from the hot plate transformed The high heat from the hot plate transformed

copper atoms into gold atomscopper atoms into gold atoms

Unit 2 TestUnit 2 Test True or false: Most of the volume occupied True or false: Most of the volume occupied

by a piece of copper is taken up by the by a piece of copper is taken up by the volume of the copper nucleusvolume of the copper nucleus

Most of the volume of an atom is occupied Most of the volume of an atom is occupied by theby the Electron cloudElectron cloud Protons Protons Nucleus Nucleus Nuclides Nuclides

Unit 2 TestUnit 2 Test Version 1Version 1 Version 2Version 2

Unit 3-2Unit 3-2Periodic Groups and FamiliesPeriodic Groups and Families

Metals PropertiesMetals Properties

Metals PropertiesMetals Properties

They are good conductors of electricityThey are good conductors of electricity Most are ductile (can be stretched) and Most are ductile (can be stretched) and

malleable (can be hammered or rolled into malleable (can be hammered or rolled into sheets)sheets)

Can form Can form alloys alloys - solid or liquid mixtures - solid or liquid mixtures of metalsof metals

Check-InCheck-In

A = metalsA = metals

B = non metalsB = non metals

C = metalloidsC = metalloids

Classify the following elements: Classify the following elements: 1.Na 1.Na

2.H 2.H

3.Si3.Si

Main GroupsMain Groups

Transition Groups

Inner Transition Elements

Main GroupsMain Groups

Main GroupsMain GroupsUse group number to find valence electrons

Alkali MetalsAlkali Metals

Group 1Group 1 Highly reactive (easily combine with Highly reactive (easily combine with

other elements)other elements) Found in nature as compoundsFound in nature as compounds

React with water to make alkaline (basic) React with water to make alkaline (basic) solutionssolutions

Will give away 1 valence electronWill give away 1 valence electron

Cesium

Alkaline Earth MetalsAlkaline Earth Metals

Group 2Group 2 22ndnd most reactive group most reactive group Give away 2 valence electronsGive away 2 valence electrons

calcium

Transition MetalsTransition Metals d d and and f f blocksblocks Most lanthanides and Most lanthanides and

actinides (f-block) are actinides (f-block) are radioactive.radioactive.

Generally less reactive Generally less reactive than alkali and alkaline than alkali and alkaline earth metalsearth metals Uranium ore

HalogensHalogens

Group 17Group 17 Have 7 valence electrons and gain 1 Have 7 valence electrons and gain 1

electron in reactions (highly reactive)electron in reactions (highly reactive)

React with metals to form saltsReact with metals to form salts Halogens are non-metalsHalogens are non-metals

Noble GasesNoble Gases Group 18Group 18 Eight valence electrons makes them very Eight valence electrons makes them very

stable (outermost energy level is full)stable (outermost energy level is full) Also called inert gases because of they Also called inert gases because of they

are non-reactiveare non-reactive

Check-InCheck-In

Group 1 Group 1 Group 2 Group 2

HydrogenHydrogen

Most common element in the universeMost common element in the universe Found in many organic compoundsFound in many organic compounds

AssignmentsAssignments

SummarySummary WS from last class (breaking the code) WS from last class (breaking the code)

due todaydue today Activity Trends WS due todayActivity Trends WS due today