Question | Answer |
Atom | An atom is the basic unit of a chemical element. |
Element | An element is a substance that cannot be broken down by chemical means. |
Periodic Table | The Periodic Table is a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure appear in vertical columns |
Periods | Periods are the horizontal rows of the periodic table. An elements period number determines its amount of electron shells. |
Groups | Groups are the vertical columns of the periodic table. Elements in the same group share several chemical properties, and have the same amount of valence electrons. |
Protons | A proton is a stable subatomic particle occurring in all atomic nuclei, with positive electric charge. Number of protons = number of electrons. |
Neutrons | A neutron is a subatomic particle contained in the atomic nucleus. No electrical charge |
Electron | An electron is a stable subatomic particle with a negative charge. Number of protons = number of electrons. |
Atomic Number | An element's atomic number is determined by the number of protons in the nucleus of an atom and its place in the periodic table. |
Atomic Mass | Atomic mass is equivalent to the number of protons and neutrons in the atom's nucleus. |
Newton's First Law | "An object at rest stays at rest and an object in motion remains in motion unless acted upon by an unbalanced force. |
Newton's Second Law | "The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object." |
Newton's Third Law | "For every action, there is an equal and opposite reaction." |
Flask | A narrow-necked glass container, typically conical or spherical, used in a lab to hold samples or reagents. |
Beaker | A lipped cylindrical glass container for lab use. |
Graduated Cylinder | a measuring instrument for measuring fluid volume |
Triple Beam Balance | A device used for determining the mass of an object. |
Thermometer | A device used to measure temperature, |
Balanced Forces | When two equal and opposite forces are applied on an object, and the object doesn't move |
Unbalanced Forces | When unequal and opposite forces are applied on an object, and the object moves in the direction the greater force is applied. |