What are observations that indicate a chemical change has occurred?

Define the term relative atomic mass

A geneticist has discovered a new compound that is made up of a small number of identical subunits. The subunits are joined end to end in long chains. Based on this information, what best can be concluded about these subunits? A. They are ketones. B.

A solute will probably dissolve best in a A. hot solvent B. cold solvent C. room temperature solvent D. temperature does not affect solubility

Under which of the following sets of conditions will a sample of a real gas deviate most from ideal behavior? a. strong interparticle attractions, low temperature, high pressure b. strong interparticle attractions, high temperature, high pressure c.

Describe what parts are required to make an electric cell

What occurs in a chemical reaction? Products are formed from reactants by the breaking and forming of new bonds. Products are formed without chemical bonds being broken. Reactants are formed without chemical bonds being broken.

What information does the atomic mass of an element provide

The following diagram represents a vertical cross section of sedimentary rock layers that have not been overturned. Which principle best supports the conclusion that these layers have undergone extensive movement since deposition?

What kind of ions do a sodium atom and a chlorine atom become when a valence electron is transferred from one to the other?

NaOH and bleach have several characteristics in common. They include all BUT one of the characteristics listed.