do now: 5 -10 min valence electrons: electrons in the outermost energy level from the nucleus. they...

1. WHAT ARE VALENCE ELECTRONS? WHAT INFORMATION CAN THEY GIVE US? 2. OPEN YOUR TEXTBOOK TO PAGE 358 READ ABOUT ELEMENTAL EFFECTS AND ANSWER THE QUESTIONS. Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding. Strotntium (Red) and Sodium (Yellow)

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1. Draw an Aluminum atom using Bohr’s model.  (Atomic # = # p+), (# p+ = # e-), (n = mass# - p+) 2. How many valence electrons does it have? 3. Draw a Lewis Dot Diagram for Aluminum. 4. How many unpaired electrons are there? 5. How many bonds can Aluminum form? 13 Al Aluminum p+ 13 e- 14 n Period 3 13 p+ 14 n 3 Al 3 3

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Page 1: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

1. WHAT ARE VALENCE ELECTRONS? WHAT INFORMATION CAN THEY GIVE US?

2. OPEN YOUR TEXTBOOK TO PAGE 358 READ ABOUT ELEMENTAL EFFECTS AND ANSWER THE QUESTIONS.

Do Now: 5 -10 min

Valence electrons: electrons in the outermost energy level from the nucleus.

They tell us how many electrons areavailable for bonding.

Strotntium (Red) and Sodium (Yellow)

Page 2: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

HOMEWORK AND ANNOUNCEMENTS Due: page 359-363 All Questions Due: Lewis Dot Structure worksheet

Lab reports and power point presentations due in one week

Homework: Read Pages 397-401 complete all questions and activities

USA TestPrep

Page 3: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

MORE PRACTICE1. Draw an Aluminum atom using Bohr’s model.

(Atomic # = # p+), (# p+ = # e-), (n = mass# - p+)

2. How many valence electrons does it have?3. Draw a Lewis Dot Diagram for Aluminum.

4. How many unpaired electrons are there?5. How many bonds can Aluminum form?

13Al

Aluminum27

13 p+13 e-14 nPeriod 3

13 p+

14 n

Al3

Page 4: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

SUBSTANCES AND MIXTURESL.O. SWBAT distinguish between mixtures and pure substances.

SC.8.P.8.9 Distinguish among mixtures (including solutions) and pure substances.

Page 5: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

VOCABULARY

Word Definition Example Drawing

Pure Substance

Elements

Compounds

Mixture

A single kind of matter that has a specific makeup or composition. Water, Sugar,

SaltElements are made up of only one type of atom. Phosphorus

Two or more different elements chemically combined

Two or more substances that are together in the same place, but their atoms are not chemically bonded.

Candy mix

Page 6: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

PAGE 391 What do you think Mixture / Pure Substance?

Page 7: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

ELEMENTS MIXTURES AND COMPOUNDS

Page 8: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

VOCABULARYWord Definition Example Drawing

HomogeneousMixture

Heterogeneous

Mixture

Evenly mixed so you can’t differentiate the parts by simply looking at the mixture.

Lemonade

A mixture in which you can see the different parts and can easily separate them out.

Trail Mix and beach sand

Page 9: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

BRAIN POP QUIZ COMPOUNDS AND MIXTURES

Page 10: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

HETEROGENEOUS VS HOMOGENEOUS

1. First label each mixture on page 3932. Cut out the pictures on page 393 and place the

substance in the correct category.

Page 11: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

SUMMARYWhat is the difference between an element and a compound?

What is the difference between an pure substance and a mixture?

What is the difference between heterogeneous and homogeneous mixture?

Page 12: Do Now: 5 -10 min Valence electrons: electrons in the outermost energy level from the nucleus. They tell us how many electrons are available for bonding

HOMEWORKRead pages 397-401 answer all questions complete all activities

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