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Questions and Answers
The properties of compounds depend on?
The properties of compounds depend on?
What is a chemical formula?
What is a chemical formula?
Symbols and subscripts that tell the type and ratio of atoms in a compound
What is the ratio of calcium (Ca) to carbon (C) to nitrogen (N) in calcium cyanide (CaCN2)?
What is the ratio of calcium (Ca) to carbon (C) to nitrogen (N) in calcium cyanide (CaCN2)?
1:1:2
What elements make up glucose?
What elements make up glucose?
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The same elements can form?
The same elements can form?
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A covalent bond is formed when a negative ion is attracted to a positive ion.
A covalent bond is formed when a negative ion is attracted to a positive ion.
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Chlorine (Cl2) is a compound.
Chlorine (Cl2) is a compound.
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A covalent bond is one in which atoms share a pair of electrons.
A covalent bond is one in which atoms share a pair of electrons.
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A polar covalent bond involves equal sharing of electrons.
A polar covalent bond involves equal sharing of electrons.
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If the oxygen in a water molecule attracts electrons more strongly than the hydrogen atoms do, the molecule must be held together by polar covalent bonds.
If the oxygen in a water molecule attracts electrons more strongly than the hydrogen atoms do, the molecule must be held together by polar covalent bonds.
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Ionic compounds exist as individual molecules.
Ionic compounds exist as individual molecules.
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The arrangement of atoms in a chemical bond affects the chemical structure of a substance.
The arrangement of atoms in a chemical bond affects the chemical structure of a substance.
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A regular crystal structure is common to ionic compounds.
A regular crystal structure is common to ionic compounds.
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Why are metals good conductors of electricity?
Why are metals good conductors of electricity?
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A metallic bond is a chemical bond between?
A metallic bond is a chemical bond between?
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Metals can easily be drawn into wire because?
Metals can easily be drawn into wire because?
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Most ionic compounds?
Most ionic compounds?
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What are some properties of covalent compounds?
What are some properties of covalent compounds?
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What is the bond that allows metal atoms to share their electrons with one another?
What is the bond that allows metal atoms to share their electrons with one another?
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What is a pair of shared electrons between two atoms?
What is a pair of shared electrons between two atoms?
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What uses chemical symbols to represent the atoms of the elements and their ratios in a chemical compound?
What uses chemical symbols to represent the atoms of the elements and their ratios in a chemical compound?
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What is a group of atoms held together by covalent bonds so that they move as a group?
What is a group of atoms held together by covalent bonds so that they move as a group?
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What is a covalent bond in which the electrons are shared unequally?
What is a covalent bond in which the electrons are shared unequally?
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What is the force of attraction between positive and negative ions?
What is the force of attraction between positive and negative ions?
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What is a number written to the right of the chemical symbol and slightly below it?
What is a number written to the right of the chemical symbol and slightly below it?
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What determines the properties of a compound?
What determines the properties of a compound?
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A compound dissolves easily in water and the solution conducts electricity. What type of compound is it?
A compound dissolves easily in water and the solution conducts electricity. What type of compound is it?
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The chemical formula for propane is C3H8. The subscripts tell you that propane has?
The chemical formula for propane is C3H8. The subscripts tell you that propane has?
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How can carbon have different forms?
How can carbon have different forms?
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What makes metals easy to form into different shapes?
What makes metals easy to form into different shapes?
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What parts of atoms combine to form different compounds with different properties?
What parts of atoms combine to form different compounds with different properties?
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In an oxygen (O2) molecule?
In an oxygen (O2) molecule?
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What happens to electrons when atoms bond?
What happens to electrons when atoms bond?
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What are ionic bonds?
What are ionic bonds?
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What happens between atoms in covalent and polar covalent compounds?
What happens between atoms in covalent and polar covalent compounds?
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The properties of chemical compounds?
The properties of chemical compounds?
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The chemical formula for the simple sugar called glucose is C6H12O6. What does the formula tell you?
The chemical formula for the simple sugar called glucose is C6H12O6. What does the formula tell you?
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Polar covalent bonds are formed when?
Polar covalent bonds are formed when?
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A molecule is a particle formed as a result of?
A molecule is a particle formed as a result of?
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A magnesium ion has a net charge of +2. A fluorine ion has a net charge of -1. What kind of compound will these two ions form and what is the compound's name?
A magnesium ion has a net charge of +2. A fluorine ion has a net charge of -1. What kind of compound will these two ions form and what is the compound's name?
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Carbon can combine with oxygen to form carbon monoxide, carbon dioxide, and carbon suboxide. What can you say for certain about these three compounds?
Carbon can combine with oxygen to form carbon monoxide, carbon dioxide, and carbon suboxide. What can you say for certain about these three compounds?
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The type of chemical bond that forms between the atoms of two different elements is determined by the?
The type of chemical bond that forms between the atoms of two different elements is determined by the?
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Different compounds can be composed of?
Different compounds can be composed of?
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Compounds often have different properties from those of the?
Compounds often have different properties from those of the?
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Most ionic compounds?
Most ionic compounds?
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What explains why carbon can exist in three different forms?
What explains why carbon can exist in three different forms?
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Study Notes
Chemical Properties and Composition
- Properties of compounds depend on the elements they consist of and their arrangement.
- A chemical formula depicts the type and ratio of atoms in a compound using symbols and subscripts.
- Different compounds can form from the same elements, resulting in varying properties.
Chemical Bonding
- Covalent bonds are formed through the sharing of electrons.
- Ionic bonds arise from the attraction between positive and negative ions.
- Polar covalent bonds involve unequal sharing of electrons.
- The arrangement of atoms in chemical bonds significantly influences the chemical structure.
Compound Types and Examples
- Glucose (C6H12O6) is made of carbon, hydrogen, and oxygen atoms in a ratio of 6:12:6.
- Calcium cyanide (CaCN2) has a calcium to carbon to nitrogen ratio of 1:1:2.
- Common properties of ionic compounds include the ability to conduct electricity when dissolved in water.
- Properties of covalent compounds include low melting temperatures and poor electrical conductivity.
Atomic Interactions
- Atoms form different compounds with unique properties through their electron clouds.
- Electrons can be shared or transferred during bonding, affecting compound formation.
- A magnesium ion (+2) and a fluorine ion (-1) combine to form magnesium fluoride (MgF2).
Key Concepts in Bonding
- Regular crystal structures are typical in ionic compounds.
- Metals exhibit good electrical conductivity due to easy flow of electrons.
Additional Chemical Structure Insights
- Molecules are formed when atoms share electrons and can be composed of various element ratios.
- Different structures result from different types of bonding interactions.
- Carbon can form unique compounds like carbon monoxide (CO), carbon dioxide (CO2), and carbon suboxide (C3O2), each exhibiting distinct properties.
Conclusion on Properties of Compounds
- The characteristics of chemical compounds can significantly differ from the elements that make them.
- Understanding the interactions and bonds between atoms is crucial in predicting compound behavior and properties.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge with these flashcards from Science Chapter 2. Focused on key concepts like compound properties and chemical formulas, these cards provide a quick reference for essential definitions and examples. Perfect for students looking to reinforce their understanding of chemistry fundamentals.
