The photograph shows the most abundant substance on Earth's su Which fact about this substance tells you that it is a compound? A. It is a colorless liquid that is inflammable. B. It is made up of atoms that have mass and take up space c. It can be separated into two substances by a chemical pro D. It appears to be the same type of matter throughout.

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What are transitions between a liquid and a solid called? identify which way they are transitioning