Chemistry, 27.08.2020 20:01, xxaurorabluexx
Charles knows that adding salt to water causes the freezing point of water to be lowered, but he wants to know if rock salt affects the freezing point more than table salt.
Charles performed an investigation in his classroom in which he measured the freezing point of 250 mL of water. He used this measurement as his control. Then, he dissolved equal amounts of rock salt and table salt in two identical 250 mL beakers of water. Finally, he measured the freezing points of each beaker of water, analyzed his results, and formed a conclusion.
What type of investigation did Charles perform?
A.
model-building
B.
laboratory experiment
C.
observational field study
D.
collection of specimens
Answers: 3
Chemistry, 22.06.2019 02:30, caeyanij
When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.
Answers: 3
Chemistry, 22.06.2019 05:50, aylengarcia090
What are transitions between a liquid and gas called? identify which way they are transitioning
Answers: 2
Charles knows that adding salt to water causes the freezing point of water to be lowered, but he wan...
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