Heat is added to a chemical system. Which energy will increase?(1 point)

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

covalent