subject
Chemistry, 31.01.2020 16:03 21tywmeb

Which of these is an indication that a chemical reaction occurred

a. formation of gas
b. boiling of a substance
c. melting of a substance
d. freezing of a substance

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 22.06.2019 13:30
Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?
Answers: 1
question
Chemistry, 22.06.2019 17:00
The biosphere of the earth is made up of what compound? organic or inorganic?
Answers: 3
question
Chemistry, 23.06.2019 01:00
Heat energy, carbon dioxide, and water are released through which process? a. photosynthesis b. depolymerization c. digestion d. cellular respiration
Answers: 1
question
Chemistry, 23.06.2019 07:00
The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?
Answers: 2
You know the right answer?
Which of these is an indication that a chemical reaction occurred

a. formation of gas
Questions
question
Mathematics, 24.03.2021 20:40
question
Mathematics, 24.03.2021 20:40
Questions on the website: 13722362