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