Glossary:
This is how much mass something has relative to its volume. �
This is where water levels rise as a dense object sinks in water. The volume and mass of water that is displaced can be used to calculate the density of the sunken object.
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This is the energy that all of the atoms within a substance has. It is made of all the kinetic and potential energy stores within each atom. �
This is the energy that is built up in any stretched object�
Latent Heat
This is the energy needed to cause 1kg of a substance to change state.
Energy to change = Mass (Kg )x Latent Heat (J/Kg) �state (J)
Density:
Increasing energy and state change
As a substance gains (heat) energy, the internal energy of the substance increases. This causes the substance to increase in temperature, however at specific points this energy is used to overcome attractions between molecules. As this happens, the increased energy causes the substance to change state. This is what happens in the horizontal (flat) lines below.
P3: Model of Matter
States of Matter
Changing State
As atoms gain or lose energy �it can ultimately result in an�overall change in state. Each
State change has a title you�need to know.