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1st Semester Vocab

1st Semester Vocabulary

TermDefinition
Metal Element that has luster, is malleable, and is ductile.
Nonmetal Element that is usually a gas or brittle solid at room temperature and is a poor conductor of heat or electricity.
Atom Smallest unit of matter; made up of protons, neutrons, and electrons.
Nucleus The positively charged central core of an atoms, consisting of protons and neutrons and containing nearly all its mass.
Proton Positively charged particle in the nucleus of an atom.
Neutron A subatomic particle of about the same mass as a proton but without an electric charge.
Electron A stable subatomic particle with a charge of negative electricity found in all atoms.
Law of Conservation of Mass Matter can neither be created nor destroyed, it can only change form or be transferred.
Molecule Smallest particle of a substance. Atoms make molecules.
Chemical Equation An equation that has the changes in the arrangements of atoms during a chemical reaction.
Friction When an object moves in one direction, sliding past another object, friction moves it in the opposite directions.
Thrust Strong push that quickly moves an object.
Net Force The combining of ALL forces on an object.
Force A push or pull.
Balanced Force All forces acting on an object are equal and opposite in direction. The net force equals 0 N and causes no change in motion.
Unbalanced Force All forces acting on an object are NOT equal. The net force will NOT be 0 N and there will be a change in motion.
Inertia An object's resistance to a change in its path of motion.
Speed Distance traveled by an object in a given amount of time.
Velocity An object speed in a given direction.
Acceleration Change in an objects speed or direction over time.
Newton SI unit of force
Newton's 1st Law An object at rest stays at rest unless acted upon by an unbalanced force. An object in motion stays in motion unless acted upon by an unbalanced force.
Newton's 2nd Law Acceleration of an object depends on its mass and the amount of force applied.
Newton's 3rd Law For every reaction there is an equal and opposite reaction.
Created by: Sachik
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