Teflon is a polymer of ethylene where all the hydrogens have been replaced by chlorine. a. true b. false

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

An observation that requires measurement is called quantitative observable or qualitative

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?