14.4.2009 Molecular Models Chemistry Lab Work 1.

Slides:

Advertisements

Similar presentations

Tro IC How many dots showing electrons are around the “S” in the Lewis structure of a sulfur atom?

Advertisements

MOLECULAR GEOMETRY VSEPR ACTIVITY. CARBON DIOXIDE Chemical formula: CO 2 # of atoms bonded to central atom: 2 # of lone pairs on central atom: 0 What.

Chemistry of Life Part I Common Constituents and Bonds.

Chemical Bonding Review Are you ready to play?. Chemical Bonding Review Question 1: Why do elements form chemical bonds.

Complete the worksheet on the structure of the atom

Unit 04 Chemical Bonding.

B. Ionic bonding and Structures of Ionic Compounds

Three Types of Bonding (1) Metallic (2) Ionic (3) Covalent

Two types of chemical bonds are Ionic Bonds and Covalent Bonds Chemical Bonding: Covalent Bonding.

I Chemical Bonding. Chemical Bond  attractive force between atoms or ions that binds them together as a unit  bonds form in order to…  decrease potential.

Calderglen High School

Chemical Bonds and Compounds.  Compounds have different properties from the elements that make them Most substances are compounds  Compound: substance.

Bonding. This presentation shows two types of bonding. Ionic bonding Covalent bonding Click on the type of bonding you want to view.

The Periodic Table Atomic Number (number of protons) Symbol Atomic Mass Period.

CHEMICAL BONDS. CHEMICAL BONDING I Constructing Molecular Models What limited the number of “atoms” you could connect? Black – 4, Red – 2, White - 1.

Bonding Ionic Covalent (Metallic). How do atoms bond(join) together to form the millions of different compounds that make up the world? It all comes down.

Covalent Bonds: Notes 5-3

Intermolecular and Intramolecular Forces Review. In the compound PCl 3, how many valence electrons are present?

Table of Contents Atoms, Bonding, and the Periodic Table Ionic Bonds Covalent Bonds Bonding in Metals Atoms and Bonding.

NOTES Ionic vs. Molecular Compounds. AKA Salts Formula units Molecular compounds Molecules IONIC / IONIC COVALENT / MOLECULAR.

Chapter 9 Chemical Bonding. Objectives 9.1 Predict the type of bond that forms between atoms by using their electronegativity values 9.1 Compare and contrast.

Compounds & Molecules Review: What is an atom? Smallest unit of matter that has the same defined properties Name the 3 subatomic particles that make up.

6.1 Elements Combine to from Compounds Compounds form when two or more different atoms combine. Properties of compounds depend on which atoms are in the.

For each of the following say if it is ionic, covalent.

TRIVIA Click for Question The strongest intermolecular force…. Hydrogen Bonding Click for: Answer and next Question.

Bonding  Compounds are formed when atoms join together.  They are held together by bonds.  Non – metal elements are joined together by a Covalent Bond.

Revision Quiz Covalent Bonding 1

(2.2) CHEMICAL COMPOUNDS (p ; ). Chemical Formulas The short form of a chemical compound is called the chemical formula. H2OH2O Symbol for.

A chemical formula is a representation of how many atoms are in a substance. E.g. HCl Hydrogen Chloride 1 Hydrogen atom; 1 Chlorine atom 0 overall charge.

VSEPR. This is the shape that CO 2 makes. 1. Linear 2. Bent 3. Trigonal planar 4. Tetrahedral 5. Trigonal pyramidal 6. Trigonal bipyramidal 7. See-saw.

Chemistry Unit 4 Bonding Why do atoms bond? -to become more stable -a full valence shell of electrons -valence shell = outside shell How do atoms bond?

Types of substances Phase at room temperature Melting point ConductivitySolubility in water MetallicSolid Except Hg Very highGood (high) in solid and liquid.

Yr 10 Chemistry Lewis Structures.  Questions of Doom Starter.

Structure and Bonding Ionic bondsCovalent bonds Metallic bonds Chemical bonding involves either transferring or sharing electrons in the highest occupied.

Chemical Bonds forces that attract atoms to each other to form compounds involves the interactions of valence electrons between atoms usually the.

Ch 2.1 Elements combine to form compounds. Compounds have different properties from elements Elements have individual properties that help us identify.

Unit 6: Chemical Bonding and Intermolecular Forces

Ch 2.1 Elements combine to form compounds

2.2 Molecular Elements and Compounds

A bond is when 2 or more atoms combine to:

Atoms and Bonding Table of Contents

Living things consist of atoms of different elements.

Chemistry-Part 2 Notes Chemical Bonding

Chemistry-Part 2 Notes Chemical Bonding

Living things consist of atoms of different elements.

Living things consist of atoms of different elements.

Chemical Compounds And Bonds

Lab Shapes of Molecules.

Bonding Structures Nat 5

CHEMICAL BONDING _____ BONDS.

Lewis Dot Diagrams.

Chemical Compounds And Bonds

Which of the following molecules does

Living things consist of atoms of different elements.

TOPIC 5 CHEMICAL BONDS By: School of Allied Health Sciences

Living things consist of atoms of different elements.

Living things consist of atoms of different elements.

Living things consist of atoms of different elements.

Living things consist of atoms of different elements.

Living things consist of atoms of different elements.

Living things consist of atoms of different elements.

Covalent Bonds When Atoms Share.

Living things consist of atoms of different elements.

Ionic Bonding Describe the formation of positive and negative ions.

Ch 8 Review Qwizdom Get a Qwizdom clicker.

Covalent Bonding Summary Hydrogen Chlorine Oxygen Hydrogen Fluoride

Introduction to Compounds

Presentation transcript:

14.4.2009 Molecular Models Chemistry Lab Work 1

Theme and Aim of the Work 14.4.2009 Theme and Aim of the Work To construct molecules of compounds To construct models of crystal structures Materials: student molecular model set

Types of Molecular Models 14.4.2009 Types of Molecular Models Ball-and-stick model Framework model Space-filling model

Student Molecular Model Set Types of Chemical Bonds 14.4.2009 Student Molecular Model Set Types of Chemical Bonds Single bond Double bond Triple bond

Representation of Atoms 14.4.2009 Representation of Atoms Carbon Oxygen Chlorine (Halogens) Metals Hydrogen Nitrogen Sulphur

Types of Molecular Structures 14.4.2009 Types of Molecular Structures Linear Bent Trigonal planar Square planar Tetrahedral Octahedral

Chemical Bonding Ionic bonding Electrons are completely transferred from one atom to another. Covalent bonding Atoms share electrons.

14.4.2009 What is a covalent bond?

14.4.2009 What is a covalent bond? A covalent bond is formed when atoms share valence electrons. H  +  H  H - H

14.4.2009 What is the difference between a single covalent bond and a multiple covalent bond?

A triple bond means that three electron pairs are shared. 14.4.2009 What is the difference between a single covalent bond and a multiple covalent bond? A single bond means that only one electron pair is shared between two atoms. H  +  H  H - H A double bond means that two electron pairs are shared. O = O A triple bond means that three electron pairs are shared.  N  N

14.4.2009 What compound is it?

14.4.2009 What compound is it? Ammonia NH3

14.4.2009 What compound is it?

14.4.2009 What compound is it? Carbon dioxide CO2

14.4.2009 What compound is it?

14.4.2009 What compound is it? Hydrogen chloride HCl

14.4.2009 What compound is it?

14.4.2009 What compound is it? Water H2O

14.4.2009 What compound is it?

14.4.2009 What compound is it? Hydrogen sulphide‏ H2S

14.4.2009 What is incorrect?

14.4.2009 What is incorrect?

Why? Bounds should be single, the molecular structure should be bent. 14.4.2009 Why? Bounds should be single, the molecular structure should be bent. Wrong bonding

Why are the models incorrect? 14.4.2009 Why are the models incorrect? The molecular structure should be linear The bond should be double. Correct

14.4.2009 Crystal Models

What is characteristic for crystals with covalent bonds? 14.4.2009 What is characteristic for crystals with covalent bonds?

What is characteristic for crystals with covalent bonds? 14.4.2009 What is characteristic for crystals with covalent bonds? Crystals are usually hard and brittle. Their melting point is high. Covalent substances are insoluble in water. Example : diamond

How to construct a diamond model: 14.4.2009 How to construct a diamond model: We use models of carbon atom with four bonds (tetrahedral). models of single bonds.

What is characteristic for crystals with ionic bonds? 14.4.2009 What is characteristic for crystals with ionic bonds?

What is characteristic for crystals with ionic bonds? 14.4.2009 What is characteristic for crystals with ionic bonds? Crystals are usually brittle. Their melting point is high. Ionic substances are soluble in water. Example : NaCl

How to construct a NaCl model: 14.4.2009 How to construct a NaCl model: We use models of Na+ ions. models of Cl- ions. models of single bonds.

The Ionic Crystal Model of Sodium Chloride(NaCl) 14.4.2009 The Ionic Crystal Model of Sodium Chloride(NaCl)

Thanks for your attention G a SOSPg Znojmo, Czech R. Thanks for your attention