Question | Answer |
state of matter | The five states of matter are solids, liquids, gases, plasma, and Bose-Einstein condensates. |
solid | The atoms in the object are packed tightly together, so that it has a level of resistance to shape change |
liquid | The atoms of the object are loosely packed together, so that it can change shape, depending on its container |
gas | The atoms of the object are bouncing off of each other, forming a gas |
atom | The smallest measurable unit that matter can be broken down into |
proton | A subatomic particle found in an atom's nucleus with a positive electric charge |
neutron | A subatomic particle found in an atom's nucleus with no electrical charge, present in all atomic nuclei besides those of ordinary hydrogen |
nucleus | The central core of an atom containing protons and neutrons |
electron | A subatomic particle with a negative charge |
electron cloud | Describes where electrons are when they go around the nucleus of an atom. |
valence electron | An electron in the outer shell of an atom that can form chemical bonds with other atoms |
Periodic Table of Elements | A table of elements based on their atomic number, electron configurations, and recurring chemical properties |
reactivity | The ability of valence electrons in an atom to form chemical bonds with other atoms |
atomic number | The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table. |
mass number | The total numbers of protons and neutrons in a nucleus |
atomic mass | The mass of an atom of an element (mass number along with the weight of the electrons in the atom) |
element | Any material that cannot be broken down into more fundamental substances |