Chemical Interactions Vocabulary

  • 1.  matter - anything that has volume and mass
    2.  volume - the amount of space taken up by an object
    3.  mass - the amount of matter that something is made of
    4.  gravity - a force of attraction between objects due to their masses
    5.  weight - a measure of gravitational force exerted on an object
    6.  newton - (N) unit of measurement of force
    7.  inertia - the tendency of all objects to resist any change in motion
    8.  physical change - a change that affects one or more physical properties of a substance
    9.  chemical change - occurs when one or more substances are changed into entirely new substances with different properties
    10.  density - the amount of matter in a given space
    11.  states of matter - the physical forms in which a substance can exist
    12.  solid - the state in which matter has a definite shape and volume
    13.  liquid - the state in which matter takes the shape of its container and has a definite volume
    14.  gas - the state in which matter changes in both shape and volume
    15.  pressure - the amount of force exerted on a given area
    16.  Boyle's Law - states that for a fixed amount of gas at a constant temperature, the volume of a gas increases as its pressure decreases
    17.  Charles's Law - states that for a fixed amount of gas at a constant pressure, the volume of the gas increases as its temperature increases
    18.  plasma - the state of matter that does not have a definite shape or volume and whose particles have broken apart

    19.  model - a representation of an object or system
    20.  atom - the smallest particle into which an element can be divided and still be the same substance
    21.  nucleus - the tiny, dense, positively charged region in the center of an atom made up of protons and neutrons
    22.  electron - a negatively charged particle found in all atoms
    23.  electron cloud - the region inside an atom where electrons are likely to be found
    24.  protons - the positively charged particles of the nucleus (#of protons = atomic number)
    25.  neutrons - the particles of the nucleus that have no charge
    26.  atomic mass - the number of protons in the nucleus of an atom
    27.  mass number - the sum of the protons and neutrons in an atom
    28.  isotopes - atoms that have the same number of protons but have different numbers of neutrons