1. Which form of energy changes in chemical reactions due to bonds breaking and forming? (1 point)
activation
potential
thermal
kinetic

2. What does it mean for a reaction to release energy? (1 point)

The relative potential energy of the reaction is positive.
The relative potential energy of the reaction is negative.
The activation energy of the reaction is positive.
The activation energy of the reaction is negative.

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

the relative potential energy of the system
the potential energy of the products
the activation energy of the system
the kinetic energy of the reactant molecules

4. 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)

reactant
energy
product
catalyst

5. 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)

ionic
exothermic
endothermic
covalent

A chemical profile diagram shows the energy changes in atoms as bonds are formed. In a chemical reaction, the potential energy of species change due to breaking and forming of bonds.

When a reaction releases energy, the relative potential energy of the reaction is negative. We say that the reaction is exothermic. When heat is added to a chemical system, the kinetic energy of the reactant molecules will increase.

A catalyst is a substance the reduces the activation energy required for a reaction to occur by offering an alternative reaction pathway. Hence, it is a catalyst that lowers the energy required for a reaction to occur between carbon monoxide and nitrogen monoxide.

The type of bonding that exists between the two oxygen atoms in oxygen molecule as they share their electrons is a covalent bond.

Learn more about a covalent bond: https://brainly.com/question/25150590