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States of Matter: Glossary
C
- components
- parts
- compound
- two or more atoms joined together chemically
- compressed
- squeezed together
- conductivity
- the ability for electricity to flow
D
- density
- space between atoms
E
- electrons
- negatively charged subatomic particles that orbit an atom's nucleus
- element
- matter that is made from only one kind of atom
F
- flexibility
- ability to bend
G
- gravity
- natural attraction to the object of mass
M
- magma
- lava inside the earth
- mass
- also called weight - is not truly weight - but the amount of atoms in an object
N
- neutrons
- neutrally charged subatomic particles that exist in the nucleus of an atom
- nucleus
- center of an atom
P
- Periodic Table of the Elements
- a table that lists the number of protons and other properties of the 100 or so atoms that are known to exist
- phase change
- to change from one state to another state of matter
- plasma
- fourth state of matter - electrically charged, lots of energy
- properties
- descriptive ways of identifying matter
- protons
- positively charged subatomic particles that orbit the nucleus of an atom
R
- room temperature
- temperature of the average room - approximately between 20 to 25°c (68 to 77°f) - can vary
S
- STM
- scanning tunneling microscope - an electron microscope used to map atoms, to obtain atomic-scale images of metal surfaces in 3 D
- subatomic particles
- smaller parts of an atom
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