Energy & Chemistry: Crash Course Chemistry

The video discusses the misconception that everything is made of chemicals, explaining that everything is actually energy. It uses a trebuchet to illustrate different forms of energy, such as mass, thermal, and chemical energy. The video delves into gravitational potential energy and the first law of thermodynamics, emphasizing that energy cannot be created or destroyed. It defines energy, work, and heat in scientific terms and explains how systems exchange energy. Finally, it explores chemical energy and reactions, highlighting the role of energy in chemistry.

Which of the following is NOT considered a chemical?

• Salt

• Carbon Dioxide

• Water

• Sound

What type of energy is stored in the bonds between atoms in a trebuchet?

• Gravitational energy

• Chemical energy

• Nuclear energy

• Thermal energy

What is the first law of thermodynamics also known as?

• Law of Conservation of Energy

• Law of Energy Transformation

• Law of Energy Destruction

• Law of Energy Creation

In physics, what is the definition of work?

• Anything you have to do but don't want to

• A force acting on something causing it to move

• The transfer of energy by thermal interactions

• The capacity to produce heat

What happens to the internal energy of a system when work is done on it?

• It remains constant

• It becomes zero

• It decreases

• It increases

What type of reaction occurs when heat flows into a system?

• Combustion reaction

• Oxidation reaction

• Endothermic reaction

• Exothermic reaction

What is the role of surroundings in thermodynamics?

• To create energy

• To destroy energy

• To allow energy changes in the system

• To keep energy constant