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

Slides:



Advertisements
Similar presentations
Building Blocks 1d Int
Advertisements

How Atoms Combine (7.3). Atoms combine to become more ________. The most stable elements in the periodic table are the ___________________ because they.
04/08/2015 Covalent Bonding Summary Hydrogen Chlorine Oxygen Hydrogen Fluoride Ammonia Water Questions.
Covalent bonding “All you need is love, love Love is all you need”
Understanding Chemical Reactions Lesson Covalent bonding.
SIMPLE COVALENT COMPOUND PROPERTIES Noadswood Science, 2012.
Bonding Chapter 5.
Complete the worksheet on the structure of the atom
LT 2: Covalent Bonding. Why do atoms bond? Atoms gain stability when they share electrons and form covalent bonds. This gives the atoms a FULL outer energy.
Lesson 1.5 Covalent bonding
Covalent Bonding Covalent bonding in elements. The covalent bond When non-metal atoms react together, they need to gain electrons to fill their outer.
 Why don’t we use lead in pencils?  What is special about the graphite that is used?
Chapter 5 Bonding. When atoms combine they form a chemical bond The force of attraction between two or more atoms.
Calderglen High School
Covalent Bonding LO: Describe how electrons make a covalent bond (D) Explain what happens to form a covalent bond (C) Explain why a compound would have.
Chemical Bonding Types of Bonds There are two kinds of Chemical bonds Ionic and covalent An ionic bond is formed when electrons are transferred from.
Covalent compounds Covalent compounds are formed when non-metal atoms react together. As these atoms come near their outer electrons are attracted to the.
 atoms that lose or gain electrons become ions  cations have + charge  anions have – charge  cations and anions are attracted to each other by elecrostatic.
Molecular Compounds 3.3. Facts Molecular compounds occur when non metals combine to form a pure compound. These non-metals share electrons forming a molecular.
Covalent bonding.
Covalent bonding: When two non-metal atoms join to one another they tend not to form ions. Why do you think this is? Clue: What happens to non-metals when.
Making Bonding Models.
Chemical Bonding Covalent Bonding.
Covalent Bonding Ms. Cook. Covalent Bonds The electrons are shared between the atoms for each to reach an octet. A molecule is a neutral group of atoms.
Unit 6A: Ionic and Covalent Bonding. Ions Why do elements in the same group behave similarly? They have the same number of valence electrons. Valence.
Metallic Bonding Noadswood Science, 2012.
7.1 COMPOUND, ATOMS AND IONS Let’s review: look at these elements: Sodium (metal) Fluorine(non metal) Neon (noble gas)
Bonding Why do atoms bond? The octet rule – all atoms bond so they have 8 electrons in their outer shell, so that it is FULL.
Bonding  Compounds are formed when atoms join together.  They are held together by bonds.  Non – metal elements are joined together by a Covalent Bond.
Covalent Bonding in hydrogen chloride Click to continue.
WHY DO ATOMS BOND TOGETHER? ATOMS WANT TO ACHIEVE A STABLE ELECTRON CONFIGURATION (OR FULL OUTER SHELL OF VALENCE ELECTRONS).
BONDING. WHY ATOMS COMBINE -1 All atoms want a full outer shell Some atoms will lose electrons to empty their shells These become positively charged ions.
Chapter 5 Section 3.  In Ionic bonds, one atom gains valence electrons while the other loses valence electron(s) -- Transfer of Electrons Usually one.
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.
C2 – Chemistry The Atom, Particles and Bonding. C2 – Chemistry - AIMS to represent the electronic structure of the first twenty elements of the periodic.
1. 2 Objectives Identify the stable noble gas structure. Explain the formation of ionic and covalent bonds. State the properties of ionic and covalent.
National 5 Chemistry 1.3 The Importance of Chemical Bonding Covalent Bonding in Molecules.
COVALENT BONDING. HOW DOES IT WORK? Covalent bonding takes place between non- metals atoms only Atoms try to attain noble gas structure by sharing electrons.
Covalent Bonding This occurs when non metal atoms bond together. They share pairs of electrons to give oneanother complete outer shells. Here covalent.
Yr 10 Chemistry Covalent Bonding.  Questions of Doom Starter.
Ionic substances C2.1/2 10-Jul-11. Metal + Non-metal Metal atoms Non-metal atoms + ions– ions electrons Ionic compound Atoms get full outer shells.
Is this an outlier? R2 =
Ionic & Covalent Bonding
Understanding Chemical Reactions
Bonding.
How Atoms Combine (7.3).
How Atoms Combine (7.3).
Chemistry-Part 2 Notes Chemical Bonding
Chemistry-Part 2 Notes Chemical Bonding
Chemical Bonding.
Bonding Structures Nat 5
5-1 Notes - Compounds Chapter 5, Lesson 1.
Chemical Bonding.
Covalent Bonds When Atoms Share.
Covalent Bonding Covalent bonding in elements.
Ionic Bonding Describe the formation of positive and negative ions.
5. Covalent Bonding Aims We are learning to:
Covalent Bonding Summary Hydrogen Chlorine Oxygen Hydrogen Fluoride
Chemical Bonding.
Presentation transcript:

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

 Blue crystals  Will dissolve  Conducts electricity when molten

 Dangerous substance  Contains carbon  Made by incomplete combustion

 MgO

 diatomic green gas  Melting point -101 °C  Boiling point °C

 Very hard  Tetrahedral structure  Boiling point 2230 °C  Used in desiccants

 Pungent smelling gas  Can be used in explosives

Potassium chloride

IONIC NaCl Copper Sulfate MgO Potassium chloride COVALENT Methane Oxygen Carbon Monoxide CL 2 Silicon Dioxide Metals bond to non metals to form ionic compounds. When non metals bond a covalent compound is formed

When non-metal atoms react together, they need to gain electrons to fill their outer shell and become stable. They can only do this if they share electrons with each other. The atoms share electrons so there is a strong force that joins the atoms together. This is called a covalent bond. H H incomplete outer shells H H both atoms have a full outer shell solid line HH – – HH

Which other elements form diatomic molecules?

HH Cl O O The covalent bonds between the atoms are strong which is why the atoms go around in pairs.

Remember more than one pair of electrons can be shared. Draw the molecules in both ways (only the outer shell)

Chlorine (2.8.7) needs 1 more electron to have a completely full outer shell. Cl Cl 2 or Cl–Cl To achieve this, it can share an electron with another chlorine atom. This creates a single bond. Cl

O Oxygen (2.8.6) needs 2 more electrons to have a completely full outer shell. O 2 or O=O To achieve this, it can share two electrons with another oxygen atom. This creates a double bond. O O O

Nitrogen (2.8.5) needs 3 more electrons to have a completely full outer shell. N 2 or N≡N It can share three electrons with another nitrogen atom to do this. This creates a triple bond. N N N N

Remember more than one pair of electrons can be shared. Draw the molecules in both ways (only the outer shell)

Covalent bonding can take place between atoms of different elements to create molecules of covalent compounds. These covalent bonds can be single, double or triple. Both hydrogen (1) and chlorine (2.8.7) need 1 more electron to fill their outer shell. By sharing one electron each, they can fill their outer shells and become stable. HCl or H Cl Cl H H 2 + Cl 2   2HCl

O Oxygen (2.6) needs 2 more electrons, but hydrogen (1) only needs 1 more. How can these two elements be covalently bonded? The oxygen atom shares 1 electron with 1 hydrogen atom, and a second electron with another hydrogen atom. H 2 O or H O H H H

N NH Electron configuration Electrons needed Ratio of atoms How are nitrogen and hydrogen bonded in ammonia? H H NH 3 or H N H H H

CH Electron configuration Electrons needed Ratio of atoms How are carbon and hydrogen bonded in methane? CH 4 or H C H H H C H H H H