Imagine you’re standing at the center of the simulation, and the airplane flies directly overhead with an object speed of 50 meters per second. From your perspective, how does the frequency of the waves appear to change as the airplane approaches and then passes you?

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o