MAD SCIENTIST ---- MATTER and ENERGY A ______ is a mixture that looks the same everywhere even under a microscope. a. Solution b. Oil and water c. Chex - mix d. salad Your teacher mixes together two clear liquids. Together the two liquids turn purple and bubbled. You most likely just witnessed a: a. Transfer of energy b. Physical reaction c. Chemical reaction d. Force In a __________ reaction, two substances react to form a new substance. a. Physical b. Chemical c. Kinetic d. potential Stored energy is called ____________. In a chemical reaction there may be a: a. Color change b. Formation of a gas c. Heat change d. All of the above What form does the sun’s energy have when it reaches Earth? a. Visible Light b. Infrared light c. Ultraviolet light (uv) d. All of the above All of the following are conductors of heat EXCEPT a. Wood b. Glass c. Copper d. Air An object’s tendency to resist change in motion is its ________. Gravity is a _______. a. Velocity b. Speed c. Force d. Weight In winter, ice and snow may cover the concrete sidewalk, making it slippery. It is harder to walk because ice lowers this force: A. Gravity B. Friction C. Propulsion D. Inertia a. b. c. d. Potential Kinetic Chemical Light A push or pull that acts on an object is called a ________. a. Inertia b. Work c. Force d. energy a. b. c. d. Inertia Work Force energy An object that is moving has_______. a. Chemical energy b. Potential energy c. Kinetic energy d. A charge How can a force affect a moving object? A . it can change its velocity only B. it can change its velocity and its direction c. it can change its velocity and its mass d. it can change its velocity direction and its mass Which of these has energy? a. A flying kite b. A molecule c. A speeding train d. All of the above Some chemical reactions produce heat. Where does the energy come from? a. Energy is created. b. Energy is taken from the atmosphere c. Kinetic energy is transformed into heat. d. Chemical energy is transformed into heat.