| Question |
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| Answer |
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| atoms |
smallest piece of matter that retains the properties of the element |
| nucleus |
very small, very dense center of the atom with a positive charge, contains protons and nuetrons |
| proton |
subatomic particle found in the nucleus, has a positive charge |
| neutron |
subatomic particle found in the nucleus, has no electrical charge (neutral) |
| electron |
subatomic particle that orbits the nucleus, has a negative charge |
| quark |
subatomic particle that makes up protons and neutrons |
| atomic number |
number of protons in the nucleus |
| atomic mass |
the average mass of an atom of an element and all its isotopes |
| periods |
(Rows) horizontal rows of elements- first element a very reactive solid, last element a very non-reactive gas |
| families |
(Columns) columns of elements who share similar characteristics |
| luster |
shininess, high melting point |
| malleable |
can be pounded into sheets- good conductors |
| ductile |
can be made into wires |
| solid |
particles vibrate in place packed tightly together |
| liquid |
particles are spaced apart more than solids; move moderately fast and flow around each other |
| gas |
particles move very fast and expand to fit the container |
| plasma |
state in which matter is heated to extermely high temperature and the electrons separate from atoms |
| phase change |
when a substance changes from one phase of matter to another due to gain or loss of heat energy |
| conservation of matter |
matter cannot be destroyed, it can only change forms |
| physical property |
any characteristic of a material such as a size or shape that you can observe without changing the identity of a material |
| matter |
solids, liquids, gases, or plasmas |
| mass |
measure of the amount of matter in an object; always constant |
| weight |
gravitational force on an object; changes depending on the amount of gravity |
| density |
the amount of mass in a certain volume; mass/volume |
| melting |
when a solid changes phase to a liquid due to the addition of heat energy; happens a the melting point |
| freezing |
when liquid changes to a solid due to a loss of heat energy; happens a the freezing point |
| vaporization |
when a liquid changes to a gas due to the additon of heat energy; happens at the boiling point |
| sublimation |
when a solid changes phases to a gas without becoming a liquid due to the addtion of heat energy |
| condensation |
when a gas changes to a liquid due to a loss of heat energy |
Cardio Block2anatomy
