Podcast
Questions and Answers
What is the first step in balancing a chemical equation?
What is the first step in balancing a chemical equation?
- Balancing hydrogen and oxygen atoms
- Balancing each atom individually
- Converting a word chemical equation into a formula (correct)
- Counting the atoms on both sides
Which type of reaction absorbs heat from the surroundings?
Which type of reaction absorbs heat from the surroundings?
- Exothermic reactions
- Redox reactions
- Spontaneous reactions
- Endothermic reactions (correct)
What is the fundamental quantity used to explain endothermic and exothermic reactions?
What is the fundamental quantity used to explain endothermic and exothermic reactions?
- Gibbs free energy
- Entropy
- Enthalpy (correct)
- Activation energy
Which type of particles contain the least amount of kinetic energy?
Which type of particles contain the least amount of kinetic energy?
How are gas particles described in terms of their motion according to the Kinetic Molecular Theory?
How are gas particles described in terms of their motion according to the Kinetic Molecular Theory?
What is the key factor to identify whether a process is endothermic or exothermic?
What is the key factor to identify whether a process is endothermic or exothermic?
Which law describes the relationship between the pressure and volume of a gas at constant temperature?
Which law describes the relationship between the pressure and volume of a gas at constant temperature?
In which phase do molecules have little to no attraction between each other?
In which phase do molecules have little to no attraction between each other?
What group do the noble gases belong to in the periodic table?
What group do the noble gases belong to in the periodic table?
Which property of the noble gases increases as you go down the group?
Which property of the noble gases increases as you go down the group?
What is a common physical property of noble gases?
What is a common physical property of noble gases?
Which statement is true about the chemical formulas of compounds?
Which statement is true about the chemical formulas of compounds?
What do molecules contain?
What do molecules contain?
Which type of formula shows the simplest ratio of atoms in a chemical compound?
Which type of formula shows the simplest ratio of atoms in a chemical compound?
Why are noble gases often used in light sources?
Why are noble gases often used in light sources?
Which noble gases are used in the medical industry?
Which noble gases are used in the medical industry?
What is the main characteristic of noble gases?
What is the main characteristic of noble gases?
What does the molecular formula represent?
What does the molecular formula represent?
What is the equation used to measure the rate of a chemical reaction?
What is the equation used to measure the rate of a chemical reaction?
How does increasing the concentration of reactants affect the rate of a reaction?
How does increasing the concentration of reactants affect the rate of a reaction?
What happens to the rate of a reaction when you lower the concentration of reactants?
What happens to the rate of a reaction when you lower the concentration of reactants?
How does increasing the available surface area of reactants affect the rate of a reaction?
How does increasing the available surface area of reactants affect the rate of a reaction?
What role does a catalyst play in a chemical reaction?
What role does a catalyst play in a chemical reaction?
According to Antoine Lavoisier's work, what happens to mass during a chemical reaction?
According to Antoine Lavoisier's work, what happens to mass during a chemical reaction?
What is defined as a boundary in a System-Surroundings setup?
What is defined as a boundary in a System-Surroundings setup?
Which type of system allows movement of matter and energy across its boundary?
Which type of system allows movement of matter and energy across its boundary?
What does a balanced chemical equation ensure according to the law of conservation of matter?
What does a balanced chemical equation ensure according to the law of conservation of matter?
What does the presence of a catalyst do in terms of activation energy?
What does the presence of a catalyst do in terms of activation energy?
Which type of formula includes the subscripts representing how many of certain atoms from an element occur within a group?
Which type of formula includes the subscripts representing how many of certain atoms from an element occur within a group?
What type of change only alters the way something looks, not its identity?
What type of change only alters the way something looks, not its identity?
What is required to be met in order for a reaction to go to completion?
What is required to be met in order for a reaction to go to completion?
What are the signals that show a chemical reaction is likely taking place?
What are the signals that show a chemical reaction is likely taking place?
Which of the following is an example of a physical change?
Which of the following is an example of a physical change?
What happens in cellular respiration?
What happens in cellular respiration?
Which process involves using a forced electric current through a solution to catalyze a reaction to oxidize/reduce?
Which process involves using a forced electric current through a solution to catalyze a reaction to oxidize/reduce?
When do chemical reactions occur according to collision theory?
When do chemical reactions occur according to collision theory?
What determines whether a chemical reaction has taken place or not?
What determines whether a chemical reaction has taken place or not?
What is the difference between condensed and structural formulas?
What is the difference between condensed and structural formulas?
What characteristic of noble gases allows them to be used in the creation of light sources?
What characteristic of noble gases allows them to be used in the creation of light sources?
Which property of noble gases decreases as you go down the group?
Which property of noble gases decreases as you go down the group?
What type of formulas show the simplest ratio of atoms from different elements in a chemical compound?
What type of formulas show the simplest ratio of atoms from different elements in a chemical compound?
In which group of the periodic table are the noble gases located?
In which group of the periodic table are the noble gases located?
What do chemical compounds contain?
What do chemical compounds contain?
What type of formulas use subscripts to represent the number of atoms of each element in a compound?
What type of formulas use subscripts to represent the number of atoms of each element in a compound?
Which of the following is a characteristic of noble gases?
Which of the following is a characteristic of noble gases?
What is the molecular formula used to represent in a chemical compound?
What is the molecular formula used to represent in a chemical compound?
What do molecules contain?
What do molecules contain?
Which formula type represents the simplest ratio of atoms in a chemical compound?
Which formula type represents the simplest ratio of atoms in a chemical compound?
What is the equation used to measure the rate of a chemical reaction?
What is the equation used to measure the rate of a chemical reaction?
What does a catalyst do in terms of activation energy?
What does a catalyst do in terms of activation energy?
What is the main role of closed systems in chemistry?
What is the main role of closed systems in chemistry?
What determines whether a chemical reaction has taken place or not?
What determines whether a chemical reaction has taken place or not?
In a System-Surroundings setup, what does the Boundary of a System separate?
In a System-Surroundings setup, what does the Boundary of a System separate?
What is the key characteristic of noble gases?
What is the key characteristic of noble gases?
In calorimetry, what do closed containers known as calorimeters evaluate?
In calorimetry, what do closed containers known as calorimeters evaluate?
What replaced the phlogiston theory regarding the mass changes during burning?
What replaced the phlogiston theory regarding the mass changes during burning?
What is an Open System defined by?
What is an Open System defined by?
What do noble gases have that contributes to their stability?
What do noble gases have that contributes to their stability?
Which type of formula includes drawing lines between atoms to show bonds?
Which type of formula includes drawing lines between atoms to show bonds?
What characteristic distinguishes condensed formulas from structural formulas?
What characteristic distinguishes condensed formulas from structural formulas?
What is the main difference between a physical change and a chemical change?
What is the main difference between a physical change and a chemical change?
Which chemical reaction type is crucial for breaking down glucose into usable energy molecules?
Which chemical reaction type is crucial for breaking down glucose into usable energy molecules?
What signals indicate a chemical reaction is likely taking place?
What signals indicate a chemical reaction is likely taking place?
Which chemical reaction example involves using oxygen to change a fuel into usable energy?
Which chemical reaction example involves using oxygen to change a fuel into usable energy?
What happens to the chemical composition of products in a chemical reaction?
What happens to the chemical composition of products in a chemical reaction?
'Collision theory' explains that chemical reactions occur due to the collisions of:
'Collision theory' explains that chemical reactions occur due to the collisions of:
'Activation energy requirements must be met in order for a reaction to go to completion' implies that:
'Activation energy requirements must be met in order for a reaction to go to completion' implies that:
'Cellular respiration is absolutely necessary for all life processes.' This statement implies that:
'Cellular respiration is absolutely necessary for all life processes.' This statement implies that:
What is the first step to balancing a chemical equation?
What is the first step to balancing a chemical equation?
Which type of reaction absorbs heat from the surroundings?
Which type of reaction absorbs heat from the surroundings?
What is the main role of a catalyst in a chemical reaction?
What is the main role of a catalyst in a chemical reaction?
What is true about gas particles according to the Kinetic Molecular Theory (KMT)?
What is true about gas particles according to the Kinetic Molecular Theory (KMT)?
What describes the motion of solid particles according to the Kinetic Molecular Theory?
What describes the motion of solid particles according to the Kinetic Molecular Theory?
Which law describes the relationship between pressure and volume of a gas at constant temperature?
Which law describes the relationship between pressure and volume of a gas at constant temperature?
"Endothermic processes make the surroundings cooler". Why is this statement true?
"Endothermic processes make the surroundings cooler". Why is this statement true?
