A geologist tests a rock containing calcium oxide by reacting it with hydrochloric acid. Water and calcium chloride form. Which bonds break? H–O bonds in water and Ca–Cl bonds in calcium chloride
Ca–Cl bonds in calcium chloride and H–Cl bonds in hydrochloric acid
Ca–O bonds in calcium oxide and H–O bonds in water
Ca–O bonds in calcium oxide and H–Cl bonds in hydrochloric acid

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

If element x has 99 protons how many electrons does it have

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature