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Questions and Answers
Which of the following is NOT considered a strong chemical bond?
Which of the following is NOT considered a strong chemical bond?
- Covalent bond
- Hydrogen bond (correct)
- Metallic bond
- Ionic bond
Explain the role of electron transfer in the formation of an ionic bond.
Explain the role of electron transfer in the formation of an ionic bond.
An atom transfers electrons to another atom, creating oppositely charged ions that are attracted to each other.
Dot and cross diagrams are suitable for representing the three-dimensional structure of a giant ionic lattice.
Dot and cross diagrams are suitable for representing the three-dimensional structure of a giant ionic lattice.
False (B)
What type of force holds a giant ionic lattice together?
What type of force holds a giant ionic lattice together?
In covalent bonding, atoms ______ electrons to achieve a stable electron configuration.
In covalent bonding, atoms ______ electrons to achieve a stable electron configuration.
Which of the following substances has a giant covalent structure?
Which of the following substances has a giant covalent structure?
Polymers are examples of substances that consist of small molecules.
Polymers are examples of substances that consist of small molecules.
Describe the structure of metallic bonding in terms of positive ions and electrons.
Describe the structure of metallic bonding in terms of positive ions and electrons.
What is the primary reason metals are good conductors of electricity?
What is the primary reason metals are good conductors of electricity?
An alloy is a mixture of metals or a metal with another element, arranged to alter the ______ of the metal.
An alloy is a mixture of metals or a metal with another element, arranged to alter the ______ of the metal.
Which property of diamond makes it suitable for use in cutting tools?
Which property of diamond makes it suitable for use in cutting tools?
Diamond is a good conductor of electricity.
Diamond is a good conductor of electricity.
Explain why graphite is soft and slippery.
Explain why graphite is soft and slippery.
Which of the following best describes the structure of graphene?
Which of the following best describes the structure of graphene?
The first fullerene discovered was ______, which has a spherical shape.
The first fullerene discovered was ______, which has a spherical shape.
Match the following materials with their primary use based on their properties:
Match the following materials with their primary use based on their properties:
Describe the structure of a carbon nanotube.
Describe the structure of a carbon nanotube.
Which of the following properties is important in nanotechnology applications of fullerenes and carbon nanotubes?
Which of the following properties is important in nanotechnology applications of fullerenes and carbon nanotubes?
Smaller quantities of nanomaterials are always less effective compared to materials with normal particle sizes.
Smaller quantities of nanomaterials are always less effective compared to materials with normal particle sizes.
In an ionic bond between sodium (Na) and chlorine (Cl), sodium loses an electron to form a ______ ion.
In an ionic bond between sodium (Na) and chlorine (Cl), sodium loses an electron to form a ______ ion.
Which group of elements is most likely to form negative ions in ionic compounds?
Which group of elements is most likely to form negative ions in ionic compounds?
Describe the limitations of representing a giant ionic structure using a ball and stick diagram.
Describe the limitations of representing a giant ionic structure using a ball and stick diagram.
2D diagrams can accurately represent the true three-dimensional arrangement of ions in a giant ionic lattice.
2D diagrams can accurately represent the true three-dimensional arrangement of ions in a giant ionic lattice.
The ______ formula of an ionic compound represents the simplest whole number ratio of ions in the compound.
The ______ formula of an ionic compound represents the simplest whole number ratio of ions in the compound.
In a covalent bond, what is the nature of the interaction between the atoms?
In a covalent bond, what is the nature of the interaction between the atoms?
Explain why silicon dioxide has a very high melting point.
Explain why silicon dioxide has a very high melting point.
All substances that consist of small molecules are gases at room temperature.
All substances that consist of small molecules are gases at room temperature.
In polymers, covalent bonds are represented by a ______ between the repeating units.
In polymers, covalent bonds are represented by a ______ between the repeating units.
Which diagram is most suitable for determining the molecular formula of a substance, showing atoms and bonds?
Which diagram is most suitable for determining the molecular formula of a substance, showing atoms and bonds?
Describe the arrangement of atoms in pure metals.
Describe the arrangement of atoms in pure metals.
Alloys always have lower melting points compared to their constituent pure metals.
Alloys always have lower melting points compared to their constituent pure metals.
Metals are good conductors of thermal energy due to their ______ electrons.
Metals are good conductors of thermal energy due to their ______ electrons.
Which property of diamond is primarily a result of its strong covalent bonds?
Which property of diamond is primarily a result of its strong covalent bonds?
Explain why graphite can conduct electricity, while diamond cannot.
Explain why graphite can conduct electricity, while diamond cannot.
What is the fundamental structural unit of graphene?
What is the fundamental structural unit of graphene?
Fullerenes are cylindrical structures composed exclusively of carbon atoms.
Fullerenes are cylindrical structures composed exclusively of carbon atoms.
Carbon nanotubes are cylindrical fullerenes with very high ______ to diameter ratios.
Carbon nanotubes are cylindrical fullerenes with very high ______ to diameter ratios.
Which statement accurately contrasts metallic and ionic bonding?
Which statement accurately contrasts metallic and ionic bonding?
Outline three factors that influence the strength of a metallic bond.
Outline three factors that influence the strength of a metallic bond.
Decreasing the number of delocalized electrons in a metal lattice will increase the metal's electrical and thermal conductivity.
Decreasing the number of delocalized electrons in a metal lattice will increase the metal's electrical and thermal conductivity.
What is the shape of the first fullerene molecule
What is the shape of the first fullerene molecule
What are the uses of fullerene (mention two)
What are the uses of fullerene (mention two)
Flashcards
Types of strong chemical bonds?
Types of strong chemical bonds?
The three types of strong chemical bonds are ionic, covalent, and metallic.
Formation of an ionic bond
Formation of an ionic bond
An ionic bond is formed through the transfer of electrons from one atom to another.
Charge on ions in groups 1,2,6,7
Charge on ions in groups 1,2,6,7
Elements in group 1 form 1+ ions, group 2 form 2+ ions, group 6 form 2- ions and group 7 form 1- ions.
Giant ionic lattice structure
Giant ionic lattice structure
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Limitations of dot and cross diagrams
Limitations of dot and cross diagrams
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What is a covalent bond?
What is a covalent bond?
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Metallic bonding
Metallic bonding
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Giant covalent structures properties
Giant covalent structures properties
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Structure of metals
Structure of metals
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What are alloys?
What are alloys?
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Metals as conductors
Metals as conductors
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Structure of Diamond
Structure of Diamond
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Structure of Graphite
Structure of Graphite
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Structure of Graphene
Structure of Graphene
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Structure of Fullerenes
Structure of Fullerenes
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Study Notes
- Assessment series 2 Y10 Chemistry Trilogy focuses on structure and bonding, specifically for written paper C11.
Chemical Bonds
- Three types of strong chemical bonds exist.
- For each bond, know what it is, where it occurs, and the particles involved.
Ionic Bonding
- Ionic bond formation involves electron transfer.
- Dot and cross diagrams represent electron transfer in ionic compounds.
- Able to determine the charge on ions in groups 1, 2, 6, and 7.
- Dot and cross diagrams illustrate ionic compounds formed by group 1 & 2 elements with group 6 & 7 elements.
Ionic Compounds
- Giant ionic lattices consist of a regular arrangement of ions, held together by strong electrostatic forces between oppositely charged ions.
- Recognise ionic structures of compounds like sodium chloride.
- Dot and cross diagrams have limitations in representing giant ionic structures.
- Ball and stick diagrams also have limitations in representing giant ionic structures.
- 2D diagrams have limitations in representing giant ionic structures.
- 3D diagrams have limitations in representing giant ionic structures.
- Calculate the empirical formula of an ionic compound given information.
Covalent Bonding
- Covalent bonds involve electron sharing.
- Covalent substances include small molecules, large molecules (polymers), and giant covalent structures like diamond and silicon dioxide.
- Able to recognise common substances made of small molecules using their chemical formula.
- Covalent bonds recognition within molecules and giant structures is possible through various forms.
- Polymers can be represented in specific forms.
Covalent Bonding Diagrams
- Draw dot and cross diagrams for hydrogen, chlorine, oxygen, nitrogen, hydrogen chloride, water, ammonia, and methane.
- Covalent bonds can be shown with lines in small molecules, repeating polymer units and parts of giant covalent structures.
- Dot and cross diagrams possess limitations when representing molecules or giant structures.
- Ball and stick diagrams have limitations in representing molecules or giant structures.
- 2D diagrams have limitations in representing molecules or giant structures.
- 3D diagrams have limitations in representing molecules or giant structures.
- Able to determine the molecular formula of a substance from models or diagrams showing atoms and bonds.
Metallic Bonding
- Metallic lattices consist of positive ions and electrons.
- Metallic bonding involves the attraction between positive ions and delocalized electrons.
- Able to recognise metallic substances in diagrams.
Giant Covalent Structures
- Substances with giant covalent structures are solids with very high melting points.
- All atoms in giant covalent structures are linked by strong covalent bonds.
- Properties are explained by their structure and bonding.
- Melting or boiling involves overcoming strong covalent bonds.
- Diamond, graphite, and silicon dioxide (silica) serve as examples of giant covalent structures.
- Able to recognise giant covalent structures from diagrams showing bonding and structure.
Properties of Metals and Alloys
- Metals have giant structures of atoms with strong metallic bonds.
- Strong metallic bonds result in high melting and boiling points for most metals.
- Describe the arrangements of atoms in pure metals.
- Properties of metals are linked to their structure and bonding.
- An alloy is a mixture of metals, or a metal mixed with another element.
- Arrangement of atoms in alloys affects their properties compared to pure metals.
Metals as Conductors
- Metals are good conductors of electricity.
- Metals are good conductors of thermal energy.
- Properties of metals are explained by their structure and bonding.
Diamond
- Describe the structure of diamond.
- Diamond is known for its hardness and very high melting point.
- Diamond doesn't conduct electricity.
- Properties of diamond are linked to its structure and bonding.
Graphite
- Describe the structure of graphite.
- Graphite is soft and slippery.
- Graphite has a high melting point.
- Graphite conducts electricity.
- Properties explained in terms of structure and bonding.
Graphene and Fullerenes
- Describe the structure of graphene.
- Properties make it useful in electronics and composites.
- Properties are explained by its structure and bonding.
- Describe the structure of fullerenes.
- Buckminsterfullerene (C60) was the first discovered fullerene, spherical in shape.
- Carbon nanotubes are cylindrical fullerenes with very high length to diameter ratios.
- Properties make them useful for nanotechnology, electronics, and materials.
- Recognise graphene and fullerenes from diagrams and descriptions.
- Know the uses of fullerenes, including carbon nanotubes.
- Smaller quantities may be more effective due to their properties, compared to materials with normal particle sizes.
- Nano dimensions are comparable to dimensions of atoms and molecules.
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