Heat is added to a chemical system. Which energy will increase?(1 point)
Responses
the activation energy of the system
the activation energy of the system
the potential energy of the products
the potential energy of the products
the relative potential energy of the system
the relative potential energy of the system
the kinetic energy of the reactant molecules
the kinetic energy of the reactant molecules
the kinetic energy of the reactant molecules
Which form of energy changes in chemical reactions due to bonds breaking and forming?(1 point)
Responses
kinetic
kinetic
thermal
thermal
potential
potential
activation
potential
What does it mean for a reaction to release energy?(1 point)
Responses
The activation energy of the reaction is negative.
The activation energy of the reaction is negative.
The relative potential energy of the reaction is positive.
The relative potential energy of the reaction is positive.
The relative potential energy of the reaction is negative.
The relative potential energy of the reaction is negative.
The activation energy of the reaction is positive.
The relative potential energy of the reaction is negative.
Carbon monoxide and nitrogen monoxide react to produce carbon dioxide and nitrogen gas. If the system contains platinum, then less energy is required for the reaction to occur. Which term best describes the role of platinum in the system? (1 point)
Responses
reactant
reactant
product
product
catalyst
catalyst
energy
catalyst
The two oxygen atoms in a molecule of oxygen gas share their outer electrons. Which type of bond do the oxygen atoms form?(1 point)
Responses
endothermic
endothermic
exothermic
exothermic
covalent
covalent
ionic