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matter ana
Vocabulary
Question | Answer |
---|---|
anything that has mass and takes up space | matter |
the amount of matter in something | mass |
the amount of space something occupies | volume |
One of 4 states of matter; in which the molecules vibrate about fixed positions and cannot move to other positions in the substance; fixed shape and a fixed volume. | solid |
One of 4 main states of matter; composed of molecules that can move about in a substance but bound loosely together; no fixed shape; takes on the shape of any container. | liquid |
One of four main states of matter; composed of molecules in constant random motion; no fixed shape and will take on the shape of the space available; the intermolecular forces are very small; no fixed volume and will expand to fill the space available. | gas |
a property that can be observed without changing the identity of the substance | physical property |
a property that can only be observed by changing the identity of the substance | chemical property |
smallest unit of matter | atom |
number of protons in an atom of a given element | atomic number |
number of protons plus the number of neutrons in an atom | atomic mass |
center of the atom that has the protons and neutrons (heaviest part of the atom) | nucleus |
positive subatomic in the nucleus | proton |
neutral subatomic in the nucleus | neutron |
negative subatomic particle that is around the outside of the nucleus | electron |
ability to be flattened into a sheet; bendable | malleability |
ability to be stretched into a wire | ductility |
ability to react with another substance | reactivity |
horizontal rows on a periodic table | period |
vertical columns on a periodic table | groups |
temperature where solid turns to liquid | melting point |
temperature where liquid turns to gas | boiling point |