Which of these is an example of a physical change?
a. sugar dissolving in warm water
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Chemistry, 03.02.2020 20:57 hipstersale4913
Which of these is an example of a physical change?
a. sugar dissolving in warm water
b. iron rusting in the presence of moist air
c. wood burning in the presence of oxygen
d. baking soda reacting with acid to form a gas
Answers: 1
Chemistry, 22.06.2019 00:00, lilyclairehutson
Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
Answers: 1
Chemistry, 22.06.2019 12:30, masteroftheuniverse3
When a scientific theory has been tested and proved by the scientific community, it becomes a law
Answers: 2
Chemistry, 22.06.2019 16:50, Pookiev
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
Answers: 1
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