March 25 Electromagnetic waves and mechanical waves are alike and different. What is one way in which these waves are similar? A. They are both long B. Both waves have a frequency C. Some have color, while others don’t D. Dogs can hear both of them Daily Questions March 25-29

March 26 A chemical reaction must take place to produce which of the following: A. mixture B. solution C. compound D. element

March 27 In a chemical reaction, reactants produce new products. As the reactants produce new products, what must always stay the same? A. physical properties B. overall mass C. state of matter D. temperature

March 28 Which describes a chemical property of silver? A. Silver is a white metal B. The density of silver is g/cm3 C. The melting point of silver is 962 degrees C D. Silver does not react with water

March 29 How do simple machines affect motion? A. They make work harder to do, hindering motion B. They make work equal C. They make work easier to do, assisting motion

Answer Key March 25: B. both waves have frequency March 26: C. a compound. None of the others are the result of a chemical reaction! March 27: B. overall mass. What you put in is what you get out, no more, no less. March 28: D. Silver does not react with water. REACT is the key word. All of the others color, density, melting point are physical properties. March 29: C. Duh (jk)