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Questions and Answers
What are the two parts of every chemical reaction?
What are the two parts of every chemical reaction?
- Reactants and products (correct)
- Solids and liquids
- Atoms and molecules
- Gases and vapors
Which phase change process involves changing from a solid directly to a gas?
Which phase change process involves changing from a solid directly to a gas?
- Deposition (correct)
- Condensation
- Evaporation
- Sublimation
What happens to the phases at the critical point on a phase diagram?
What happens to the phases at the critical point on a phase diagram?
- Gas transforms into a liquid
- Liquid changes into a solid
- Vapor and liquid become indistinguishable (correct)
- Solid turns directly into a gas
Which substance classification has a pH above 7?
Which substance classification has a pH above 7?
How does the pH of a solution change as the concentration of hydrogen ions increases?
How does the pH of a solution change as the concentration of hydrogen ions increases?
What role do buffers play in maintaining optimal pH in the body?
What role do buffers play in maintaining optimal pH in the body?
Which type of substance is used in chemotherapy drugs to destroy cancerous cells?
Which type of substance is used in chemotherapy drugs to destroy cancerous cells?
What happens during melting?
What happens during melting?
Why do enzymes require a specific pH to function optimally?
Why do enzymes require a specific pH to function optimally?
What is the purpose of balancing a chemical equation?
What is the purpose of balancing a chemical equation?
Which law states that matter cannot be created or destroyed during a chemical reaction?
Which law states that matter cannot be created or destroyed during a chemical reaction?
Why should subscript numbers in a chemical equation not be changed?
Why should subscript numbers in a chemical equation not be changed?
What are coefficients used for in a chemical equation?
What are coefficients used for in a chemical equation?
When balancing a chemical equation, which atoms should be balanced first according to the steps provided?
When balancing a chemical equation, which atoms should be balanced first according to the steps provided?
What is the main purpose of changing a word chemical equation into a formula?
What is the main purpose of changing a word chemical equation into a formula?
Why is it important to count the atoms on both sides of a balanced chemical equation?
Why is it important to count the atoms on both sides of a balanced chemical equation?
Which step in balancing a chemical equation involves balancing hydrogen and oxygen atoms?
Which step in balancing a chemical equation involves balancing hydrogen and oxygen atoms?
In balancing a chemical equation, what is an alternative method to achieve balance besides following step 2's order?
In balancing a chemical equation, what is an alternative method to achieve balance besides following step 2's order?
What determines both the properties and reactivity of an atom?
What determines both the properties and reactivity of an atom?
Who is known as the 'Father of the Periodic Table'?
Who is known as the 'Father of the Periodic Table'?
What is the most accurate way the modern periodic table is organized?
What is the most accurate way the modern periodic table is organized?
How can you determine the amount of valence electrons in an atom?
How can you determine the amount of valence electrons in an atom?
What happens to an atom when it gains electrons?
What happens to an atom when it gains electrons?
Which scientist created an organization tool for elements called the Law of Triads?
Which scientist created an organization tool for elements called the Law of Triads?
What is the trend in atomic radius when moving from the top right toward the bottom left on the periodic table?
What is the trend in atomic radius when moving from the top right toward the bottom left on the periodic table?
'Anions' are ions that have ___ compared to their parent atoms.
'Anions' are ions that have ___ compared to their parent atoms.
'Cations' are ions that have ___ compared to their parent atoms.
'Cations' are ions that have ___ compared to their parent atoms.
What do energy levels of an electron often coincide with?
What do energy levels of an electron often coincide with?
What happens to the ionization energy as you move left to right in a period on the periodic table?
What happens to the ionization energy as you move left to right in a period on the periodic table?
What is the main factor affecting ionization energy of an atom?
What is the main factor affecting ionization energy of an atom?
How does electronegativity change as you move from the bottom left to the top right of the periodic table?
How does electronegativity change as you move from the bottom left to the top right of the periodic table?
What type of atoms tend to have higher ionization energy requirements?
What type of atoms tend to have higher ionization energy requirements?
How does the number of protons in the nucleus influence ionization energy?
How does the number of protons in the nucleus influence ionization energy?
What determines whether an atom will gain or lose electrons during a chemical reaction?
What determines whether an atom will gain or lose electrons during a chemical reaction?
How do atoms at the top right of the periodic table compare to those at the bottom left in terms of pull on their electrons?
How do atoms at the top right of the periodic table compare to those at the bottom left in terms of pull on their electrons?
Why do atoms with more electrons tend to have lower ionization energy?
Why do atoms with more electrons tend to have lower ionization energy?
What is the main factor that determines whether an atom will gain or lose electrons during a chemical reaction?
What is the main factor that determines whether an atom will gain or lose electrons during a chemical reaction?
What classification do atoms fall into based on their ionization energy?
What classification do atoms fall into based on their ionization energy?
What is the trend in atomic radius on the periodic table when moving from top right towards bottom left?
What is the trend in atomic radius on the periodic table when moving from top right towards bottom left?
Which scientist created an organization tool for elements known as the Law of Octaves?
Which scientist created an organization tool for elements known as the Law of Octaves?
How does the behavior of an atom change based on the number of valence electrons it possesses?
How does the behavior of an atom change based on the number of valence electrons it possesses?
What is the key information needed to determine the amount of valence electrons in an atom?
What is the key information needed to determine the amount of valence electrons in an atom?
What happens to the ionic radius of an atom when it becomes a cation?
What happens to the ionic radius of an atom when it becomes a cation?
Which law acknowledged the similarities in every eighth element in the periodic table?
Which law acknowledged the similarities in every eighth element in the periodic table?
What is the main purpose of electron configurations for atoms?
What is the main purpose of electron configurations for atoms?
Which type of ion has a larger ionic radius compared to its parent atom?
Which type of ion has a larger ionic radius compared to its parent atom?
What affects an atom's ionization energy?
What affects an atom's ionization energy?
How does the number of electron orbits around a nucleus affect ionization energy?
How does the number of electron orbits around a nucleus affect ionization energy?
What trend is observed in ionization energy moving from top to bottom in a group on the periodic table?
What trend is observed in ionization energy moving from top to bottom in a group on the periodic table?
Why do atoms at the top right of the periodic table have higher ionization energy requirements?
Why do atoms at the top right of the periodic table have higher ionization energy requirements?
Which factor mainly determines whether an atom will gain or lose electrons?
Which factor mainly determines whether an atom will gain or lose electrons?
Why do atoms with more electrons tend to have lower ionization energy?
Why do atoms with more electrons tend to have lower ionization energy?
What happens to an atom when it gains electrons?
What happens to an atom when it gains electrons?
Why do atoms at the top right of the periodic table have smaller atomic radii?
Why do atoms at the top right of the periodic table have smaller atomic radii?
How does electronegativity change across periods on the periodic table?
How does electronegativity change across periods on the periodic table?
What is influenced by both atomic radius and ionic radius?
What is influenced by both atomic radius and ionic radius?
What are the two main parts of every chemical reaction?
What are the two main parts of every chemical reaction?
In a chemical reaction, what happens to the number of atoms when comparing the reactants to the products?
In a chemical reaction, what happens to the number of atoms when comparing the reactants to the products?
What is the significance of the critical point on a phase diagram?
What is the significance of the critical point on a phase diagram?
Which process involves changing from a gas directly to a solid without passing through the liquid state?
Which process involves changing from a gas directly to a solid without passing through the liquid state?
What is the pH range for substances classified as acids on the pH scale?
What is the pH range for substances classified as acids on the pH scale?
Which ions do acids release in solution?
Which ions do acids release in solution?
What is the role of buffers in maintaining optimal pH in the body?
What is the role of buffers in maintaining optimal pH in the body?
In terms of taste, what is a distinctive characteristic of bases?
In terms of taste, what is a distinctive characteristic of bases?
$\text{H}_2\text{CO}_3-\text{HCO}_3-$ is an example of what kind of system in the human body?
$\text{H}_2\text{CO}_3-\text{HCO}_3-$ is an example of what kind of system in the human body?
What is the purpose of balancing a chemical equation?
What is the purpose of balancing a chemical equation?
Why should subscript numbers in a chemical equation not be changed?
Why should subscript numbers in a chemical equation not be changed?
When balancing a chemical equation, which atoms should be balanced first according to the steps provided?
When balancing a chemical equation, which atoms should be balanced first according to the steps provided?
What is an alternative method to achieve balance besides following step 2's order when balancing a chemical equation?
What is an alternative method to achieve balance besides following step 2's order when balancing a chemical equation?
What determines whether an atom will gain or lose electrons during a chemical reaction?
What determines whether an atom will gain or lose electrons during a chemical reaction?
How does the pH of a solution change as the concentration of hydrogen ions increases?
How does the pH of a solution change as the concentration of hydrogen ions increases?
What is the main factor affecting ionization energy of an atom?
What is the main factor affecting ionization energy of an atom?
'Cations' are ions that have ___ compared to their parent atoms.
'Cations' are ions that have ___ compared to their parent atoms.
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