Chemical Energy Concepts and Applications

The video tutorial explains chemical energy, its examples, and the difference between endothermic and exothermic reactions. It discusses chemical bonds, using water and glucose as examples, and how chemical energy is stored in food. The tutorial also covers the measurement of energy in calories and joules, highlighting the differences between chemical and heat energy.

What must be understood to learn the concept of chemical energy?

• Nuclear fission and fusion

• Photosynthesis and respiration

• Endothermic and exothermic reactions

• Electricity and magnetism

What type of reaction is burning something?

• Catalytic

• Endothermic

• Exothermic

• Neutral

What is the energy between hydrogen and oxygen atoms in a water molecule called?

• Nuclear energy

• Chemical energy

• Mechanical energy

• Thermal energy

What does a single molecule of water possess due to chemical bonds?

• Potential energy

• Chemical energy

• Kinetic energy

• Thermal energy

What happens to the chemical energy in glucose after digestion?

• It is stored as fat

• It is released as heat

• It is excreted from the body

• It is converted into typical energy during aerobic respiration

What do we actually need from food?

• Proteins

• Vitamins

• Chemical energy

• Minerals

How many calories of chemical energy does a banana contain?

• 72

• 105

• 200

• 145

What does the body convert chemical energy from food into?

• Kinetic energy

• All of the above

• Heat energy

• Sound energy

What is the SI unit of energy?

• Joule

• Watt

• Calorie

• Newton

How is 1 calorie of chemical energy written?

• With a capital 'K'

• With a capital 'C'

• With a small 'c'

• With a small 'k'