Which of the following compounds is not considered covalent (i. e., molecular)
a. sif4
b. naf
c. n2s3
d. br2

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

Describe the interaction that occurs between two objects with the same electrical charge.

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles