How can i interest my students in chemical and physical changes in matter?

Abird sitting high in a tree is an example of what type of wnergy

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material