States Of Matter
This state of matter has a definite volume but no definite shape.
What is liquid?
The process of a solid becoming a liquid.
What is melting?
This type of reaction absorbs heat from the surroundings.
What is an endothermic reaction?
This type of reaction releases heat into the surroundings.
What is exothermic?
The unit commonly used to measure energy in chemistry.
What is the joule?
In this state, particles are tightly packed and only vibrate in place.
What is solid?
The process of a liquid becoming a gas at its boiling point.
What is boiling?
Melting ice is an example of this type of process.
What is endothermic?
Combustion of fuels is an example of this type of reaction.
What is an exothermic reaction?
The study of energy changes during chemical reactions.
What is thermodynamics?
This state of matter consists of ionized gas and is found in stars.
What is plasma?
The process of a gas turning directly into a solid.
What is deposition?
Photosynthesis is an example of this type of reaction.
What is an endothermic reaction?
Combustion of fuels is an example of this type of reaction.
What is an exothermic reaction?
This diagram shows the energy changes in endothermic or exothermic reactions.
What is an energy profile diagram?
This state of matter is the most compressible and has no definite shape or volume.
What is gas?
The energy required to turn a liquid into a gas.
What is heat of vaporization?
This term refers to the minimum energy required to start an endothermic reaction.
What is activation?
In an exothermic reaction, the enthalpy of the products is higher or lower than that of the reactants?
What is lower?
The amount of energy needed to raise the temperature of 1 gram of a substance by 1°C.
What is specific heat capacity?
The particles in this state of matter move freely and have the most kinetic energy.
What is gas?
The process in which a solid changes directly into a gas without becoming a liquid.
What is sublimation?
The energy change in an endothermic reaction is represented by a positive or negative ΔH?
What is positive?
This term refers to the energy released when bonds are formed in an exothermic reaction.
What is bond energy?
The energy stored in chemical bonds.
What is potential energy?