Chemistry, 20.11.2020 18:40 milkshakegrande101
A student was investigating the impact of changing physical properties on a sample of matter. What observation could have been made during her investigation
A Changing the physical properties never altered its chemical composition
B
Changing the physical properties always altered its chemical composition,
C.
Changing the physical properties altered its chemical composition when the change was large.
D
Changing the physical properties altered its chemical composition when the change was small
Answers: 3
Chemistry, 22.06.2019 05:30
Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?
Answers: 2
Chemistry, 22.06.2019 06:10
56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls
Answers: 1
Chemistry, 23.06.2019 06:30
Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.
Answers: 1
A student was investigating the impact of changing physical properties on a sample of matter. What o...
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