
  • Unit 1 Matter

    • Atom - the smallest particle of an element that can exist either alone or in combination
    • Element - A substance which cannot be separated into smaller parts and still retain its chemical identity. For example, sodium (Na) is an element.
    • Compound - a substance made up of two or more elements.
    • Energy Transformations - The process of changing from one energy form to another
    • Kinetic Energy - Energy due to motion of a mass
    • Law of Conservation of Energy - basic law of nature which claims that energy is neither created nor destroyed but rather changes form
    • Mass - The measurement of the amount of matter that an object contains.
    • Metal - A substance that is a good conductor of electricity and heat. They also have the properties of being ductile, malleable and shiny
    • Metalloid - A substance that has some properties of metals and some properties of nonmetals
    • Mixtures - a material made up by two or more different substances which are mixed but are not combined chemically
    • Nonmetal - A substance that lacks the properties of a metal which are brittle and are poor conductors of heat and electricity
    • Potential Energy - A form of energy that can be converted to other, more useful forms; stored energy
    • Radioactive - a property of an element that causes it to spontaneously decay into other smaller elements
    • Weight - The mathematical relationship between mass and gravitational pull; Weight = Mass x Gravity
    Structure of atoms - includes finding number of protons, neutrons, and electrons