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Volume The amount of space occupied by an object. (measured in mL or cm3)
Compound A pure substance composed of two or more different elements that are chemically bonded. Examples: CO2, NaOH, NaCl
Atoms Tiny particles that make up all matter that cannot be seen with the naked eye. (a single microscopic unit of matter)
Matter Anything that has mass and takes up space
Mass The amount of matter in an object (measured in grams)
Element A pure substance that is composed of a single type of atom. Examples include: Silver (Ag), Iron (Fe), Boron (B)
Hypothesis Problem which the lab activity is designed to solve; Suggested solution to a problem; educated guess
Scientific Method Model or guide used to gather information and solve problems
Dependent variable the factor that changes as a result of changes to the independent variable in an experiment; also called responding variable
Independent Variable the one factor that a scientist changes during an experiment, also called the manipulated variable
beaker wide, cylinder shaped vessel used to hold liquids
graduated cylinder tall, narrow container that has markings so that it can be used to measure the volume of liquids; measures in milliliters
triple beam balance a device used to find the mass of objects; measures in grams
microscope Is an instrument that magnifies very tiny things in order to make them appear larger.
Stopwatch device used to measure time
Solid The particles are tightly packed together and can only vibrate in place
Gas The particles move and spread far apart, filling all the space available
Liquid A state of matter that has a definite volume, but not shape of its own; it will take the shape of a container that it is put in; The particles move around one another freely.
Conservation of Mass When an object or substance undergoes a phase change, the mass of the object or substance stays the same For example, if 5 grams of pure ice melts into liquid water, the liquid will also have a mass of 5 grams.
Motion Change in an object's position over time relative to a reference point
Speed Distance it travels divided by the time it takes to travel that distance The rate at which an object moves
gravitational potential energy (GPE) the increase in potential energy caused when an object is lifted up against the force of gravity. Related to height
kinetic energy energy that an object has because it is moving
potential energy the energy available as a result of an object's position or condition
Modeling When you use a copy of what you are studying to help explain it.
Created by: nwysocki