Motion & Elements

Question What is motion? tap to flip ↻ Answer Motion is the change in position of an object with respect to time and its surroundings. Question Define speed. tap to flip ↻ Answer Speed is the distance traveled by an object per unit time. It is a scalar quantity. Question What is velocity? tap to flip ↻ Answer Velocity is the displacement of an object per unit time in a given direction. It is a vector quantity. Question State the formula for average speed. tap to flip ↻ Answer Average speed = total distance traveled / total time taken. Question What is acceleration? tap to flip ↻ Answer Acceleration is the rate of change of velocity with respect to time. Question What is uniform motion? tap to flip ↻ Answer Uniform motion is motion in which an object covers equal distances in equal intervals of time. Question What is non-uniform motion? tap to flip ↻ Answer Non-uniform motion is motion in which an object covers unequal distances in equal intervals of time. Question What is the SI unit of speed? tap to flip ↻ Answer The SI unit of speed is meter per second (m/s). Question What is the SI unit of acceleration? tap to flip ↻ Answer The SI unit of acceleration is meter per second squared (m/s²). Question What is a periodic table? tap to flip ↻ Answer The periodic table is a tabular arrangement of chemical elements organized by increasing atomic number. Question Who is credited with creating the first periodic table? tap to flip ↻ Answer Dmitri Mendeleev is credited with creating the first widely recognized periodic table in 1869. Question What is an element? tap to flip ↻ Answer An element is a pure substance consisting of only one type of atom. Question What is the atomic number of an element? tap to flip ↻ Answer The atomic number is the number of protons in the nucleus of an atom of that element. Question What are groups in the periodic table? tap to flip ↻ Answer Groups are the vertical columns in the periodic table. Elements in the same group have similar chemical properties. Question What are periods in the periodic table? tap to flip ↻ Answer Periods are the horizontal rows in the periodic table. Elements in the same period have the same number of electron shells. Question What are metals? tap to flip ↻ Answer Metals are elements that are typically shiny, malleable, ductile, and good conductors of heat and electricity. Question What are non-metals? tap to flip ↻ Answer Non-metals are elements that are generally poor conductors of heat and electricity and are not malleable or ductile. Question What are metalloids? tap to flip ↻ Answer Metalloids are elements that have properties intermediate between metals and non-metals. Question What is the chemical symbol for oxygen? tap to flip ↻ Answer The chemical symbol for oxygen is O. Question What is the chemical symbol for gold? tap to flip ↻ Answer The chemical symbol for gold is Au.