States of matter Flashcards
What is it called going from a solid to liquid?
melting
what is it called going from a liquid to a gas?
boiling
what is it called going from a gas to a liquid?
condensing
what is it called going from a liquid to a solid?
freezing
what is it called going from a solid to a gas
sublimation
what is it called going from a gas to a solid?
sublimation
what is an atom?
the smallest part of an element that can exist
what is an element?
a substance made of only one type of only one type of atom
what is a molecule?
a cluster of non-metal atoms that are chemically bonded
what is a compound?
a substance made of two or more elements
what is a mixture?
a mix of two or more substance which are not chemically bonded
what is a pure substance?
a substance which has a fixed melting and boiling point but when in a mixture, may melt or boil at slightly different temperatures
what is the mass and charge of a proton?
1, posotive
what is the mass and charge of a neutron?
1, nuteral
what is the mass and charge of an electron?
1/1836, negative
what is the atomic number?
the number of protons in the nucleus of an atom and the number of electrons in the outer shells of an atom
what is the mass number?
The total number of protons and numerous in a nucleus (protons + neutrons)
how do you find how many neutrons are in a atom?
atomic mass - atomic number
What is the relative atomic mass?
The average masses of all the isotopes of an element (see notes for example)
