Energy Consetvation; 2nd partial quiz

What is a chemical reaction?

• A chemical reaction is a physical change in matter.
• A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.
• A chemical reaction is a change in temperature.
• A chemical reaction is a biological process.

What's energy?

• Energy is a type of food.
• Energy is a color.
• Energy is a type of animal.
• Energy is the ability to do work or cause change.

What is light?

• Light is electromagnetic radiation that is visible to the human eye.
• Light is a type of liquid substance.
• Light is a type of solid material.
• Light is a form of sound waves.

What is thermodynamics?

• Thermodynamics is a form of ancient philosophy
• Thermodynamics is a type of cooking technique
• Thermodynamics is the branch of physical science that deals with the relations between heat and other forms of energy.
• Thermodynamics is the study of weather patterns

What does thermodynamics 0th law stand for?

• Systems in thermal equilibrium with a third system are not in thermal equilibrium with each other.
• The 0th law of thermodynamics states that energy cannot be created or destroyed.
• The 0th law of thermodynamics deals with the conservation of mass.
• Systems in thermal equilibrium with a third system are in thermal equilibrium with each other.

What does mechanical equivalent of heat stand for?

• Interchangeability of mechanical work and heat
• Conversion of light into heat energy
• Transformation of sound waves into mechanical energy
• Transfer of electrical energy into chemical energy

How much heat is released when 30 g of water at 96°C cools to 25°C? The specific heat of water is 1 cal/g°C.

Mathematical Equivalence

ON

What's thermal radiation?

• Thermal radiation is the absorption of heat by an object due to its color.
• Thermal radiation is the emission of electromagnetic waves from the surface of an object due to its temperature.
• Thermal radiation is the process of converting heat into mechanical energy.
• Thermal radiation is the transfer of heat through direct contact between objects.

What is chemical energy?

• Chemical energy is a form of potential energy stored in the bonds of chemical compounds.
• Chemical energy is a form of thermal energy
• Chemical energy is a form of mechanical energy
• Chemical energy is a form of kinetic energy

Place the parts of the carbon cycle where they must be

a

b

c

d

e

f

Sunlight

photosynthesis

Factory emissions

Fossils

Animal respiration

Organic Carbon