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Properties of Matter and of Atoms
Terms in this set (28)
Anything that takes up space and has mass
Phase of matter in which atoms only have enough energy to vibrate in a tight structure
Phase of matter in which atoms have enough energy to vibrate and rotate in a loose structure
Phase of matter in which atoms have enough energy to vibrate, rotate and translate while only bound by external structures
Heat of Fusion
amount of energy required to change a substance from a solid phase to the liquid phase.
temperature at which a solid becomes liquefied
The temperature at which the pressure of the vapor of a liquid is equal to the external acting on the surface of the liquid
Heat of vaporization:
the amount of energy required by a liquid at its boiling point to become a gas
the process of a solid changing directly into a vapor without forming a wauid.
the fourth phase of matter: matter with enough energy to overcome the attractive forces within the atoms, composed of positively and negatively charged particles.
substance with atoms that are all alike
substance in which atoms from two or more elements are combined in specific proportions.
element or compound that cannot be broken down into simpler components without losing the properties of the original substance
matter composed of two or more substances that can be separated by a physical means
Law of Conservation of Mass
states that the mass of all substances present before a chemical change equals the mass of all the substances re
the smallest particle of an element that still retains the properties of that element.
the small positively charged center of an atom, contains protons and neutrons
particle in the nucleus of the atom with an electrical charge of +1.
particle in the nucleus of the atom with no electrical charge.
with an electrical charge of -1, surrounds the nucleus of an atom
particles of matter that make up protons and neutrons.
area around the nucleus of an atom where the atom's electron are most likely
Average atomic mass
weighted-average mass of an element's isotopes according to their natural abundance.
atom of an element that has a specific number of neutrons.
organized list of all known elements that are arranged by increasing atomic number and by changes in chemical and physical properties.
horizontal row on the periodic table.
elements that display similar chemical properties
Electron Dot Diagram
uses the symbol of an element and dots representing the number of electrons in the elements outer energy level
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