Will give what do baking powder, baking soda and creme of tartar all have in common? list one property of each substance above that makes it useful.

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.

Which of the following statements best explains why chemistry is testable a) it can measure data by experiments b) it cannot add new evidence c) it cannot be verified d) it is biased