20101068
Description
Flashcards by Malachy Moran-Tun, updated more than 1 year ago
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Created by Malachy Moran-Tun
over 5 years ago
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| Question | Answer |
| How many Electrons fit into the First, Second and Third Electronic Shell? | 2, 8, 8 |
| Ionic Compounds Have a _______ _______ Structure | Regular Lattice |
| What is a Negative Ion Called and How is it Formed? | An anion Gain electrons |
| What is a Positive Ion Called and How is it Formed? | A cation Loose electrons |
| What is Ionic Bonding? | Transfer of Electrons Between a Metal and a Non-Metal |
| How are Ionic Bonds Strongly Attracted to Each-other? | The Electrostatic Forces of Attraction hold the Ions Together |
| What are 2 Properties of Ionic Compounds? | 1. High Melting / Boiling Points 2. When Solid, they Cannot Conduct |
| Why can Molten or Aqueous Ionic Compounds Conduct Electricity? | Ions are Free to Move and Carry Electric Currents |
| What is the Formula of Calcium Nitrate? Calcium = Ca²⁺ Nitrate = NO₃⁻ | Ca(NO₃)₂ |
| What is a Covalent Bond? | Strong Bond that Forms when Two or More Electrons are Shared between Two or More Atoms |
| What are 3 Properties of Simple Molecular Substances? | 1. Strong Covalent Bonds between Atoms 2. Weak Intermolecular Forces between... Molecules 3. Low Melting / Boiling Point 4. Usually Gases or Liquids at Room Temperature 5. Don't Conduct Electricity as they Aren't Charged (No Free Electrons) |
| What are 3 Properties of Giant Covalent Structures? | 1. All Atoms are Bonded to Eachother by Strong Covalent Bonds 2. Very High Melting / Boiling Point 3. (Usually) Don't Conduct Electricity 4. Insoluble |
| What are 2 Properties of Diamond? | 1. Each Atom has 4 Covalent Bonds 2. High Melting Point 3. Rigid Lattice Structure 4. Doesn't Conduct Electricity |
| What are 2 Properties of Graphite? | 1. Each Atom has 3 Covalent Bonds 2. Weak Forces between the Layers 3. High Melting Point 4. Able to Conduct Electricity 5. Layers Arranged in Hexagons |
| What are 2 Property of Graphite? | 1. Each Atom has 3 Covalent Bonds 2. High Melting Point 3. Able to Conduct Electricity 4. Layers Arranged in Hexagons 5. One Atom Thick |
| Why is Graphite / Graphene Able to Conduct Electricity? | Free Electrons to Transfer Electrical Charges |
| What is the Molecular Formula of Buckminsterfullerene? | c₆₀ |
| What is Metallic Bonding? | Bonding with Delocalised Electrons |
| What are 3 Properties of Metals? | 1. High Melting Points 2. Insoluble in Water 3. Malleable 4. Conducts Electricity |
| Why are Metals Malleable? | Each Layer of Atoms can Slide Over Eachother |
| Why can Metals Conduct Electricity? | Delocalised Electrons Carry the Electrical Current |
| In a Chemical Reaction, Mass is Always ________ | Conserved |
| What is the Relative Formula Mass (Mᵣ)? | The Relative Atomic Masses (Aᵣ) of All the Atoms in a Molecule's Formula |
| What is the Empirical Formula? | The Simplest Whole Number Ratio of Atoms |
| What are the Steps to Calculate an Empirical Formula? | 1. Divide by the Relative Atomic Mass (Aᵣ) 2. Divide by the Smallest Value from the Previous Calculation 3. Round the Numbers |
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