18 Questions
What is a characteristic of an exothermic reaction?
It releases energy in the form of heat
Which type of reaction is an example of forming a chemical bond?
Exothermic reaction
What is the difference between an endergonic reaction and an endothermic reaction?
Endergonic reactions require energy, while endothermic reactions requires energy in the form of heat
Why do exothermic reactions usually feel hot?
They give off heat to the surroundings
What is an example of an endergonic reaction?
Photosynthesis
What happens when the breaking breaking a chemical bond?
Energy is absorbed
Which of the following chemical reactions is an example of a combustion reaction?
Hexanol and oxygen
What type of reaction occurs when hydrogen bromide reacts with iron metal?
Redox reaction
What is the primary type of energy possessed by an object due to its motion or movement?
Kinetic energy
What happens to the thermal energy of a cup of hot tea when milk is added?
It decreases
What is the term for the energy that arises from the temperature of matter?
Thermal energy
What is the term for the energy of motion possessed by an object due to its velocity?
Kinetic energy
What is the primary indication that a chemical reaction has occurred?
The production of new substances with different physical and chemical properties
What type of reaction is characterized by the breaking and forming of chemical bonds?
Chemical reaction
What is the result of the rusting of a steel garbage can?
The formation of iron oxide (Fe2O3)
What is the difference between a chemical change and a physical change?
A physical change involves a change in appearance, while a chemical change involves the breaking of chemical bonds
What is an example of a chemical change?
The rusting of a steel garbage can
What is a characteristic of a chemical reaction?
A change in the composition of molecules
Learn about the difference between exothermic and endothermic reactions, their characteristics, and examples. Understand how energy is released or absorbed in these reactions.
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