Water, h2o, is a molecule made of oxygen and hydrogen. the bonds that hold water molecules together are due to shared electrons, and known as bonds. a) covalent b) dependent c) ionic d) nuclear

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented. b)scientists had not completely finalized their results, which took 30 years. c)cigarettes were cheaply available and media channels were very inefficient. d)cigarette manufacturers were trying hard to bring an alternative into the market

What occurs during a combustion reaction

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical