Chemistry, 11.01.2021 20:50, brewerroserb
A student conducted an experiment to determine how the freezing point of water is affected when sugar is added to the water. He used three beakers, each filled with 1 cup of water. He added 3 teaspoons of sugar in the first beaker of water, 1 teaspoon of sugar in the second, and no sugar in the last beaker. He then cooled each beaker of water and recorded the freezing temperatures. 1. What is the control in this experiment? ___2. What is the independent variable?___ 3. What is the dependent variable?___
Answers: 3
Chemistry, 23.06.2019 00:00, sanaiajohnson56
In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above
Answers: 3
Chemistry, 23.06.2019 00:30, mathwiznot45
Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.
Answers: 1
Chemistry, 23.06.2019 11:30, junahsisney
Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.
Answers: 1
Chemistry, 23.06.2019 18:30, RealSavage4Life
Select the correct answer. which statement best explains the octet rule? a. atoms gain, lose, or share electrons to achieve a full valence shell. b. compounds always consist of eight electrons. c. molecules always consist of eight atoms. d. all atoms require eight electrons to form bonds.
Answers: 2
A student conducted an experiment to determine how the freezing point of water is affected when suga...
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