During an oxidation-reduction reaction, the number of electrons gained is

A) equal to the number of electrons lost

B) equal to the number of protons gained

C) less than the number of electrons lost

D) less than the number of protons gained

What happens when the action force of a bat strikes a baseball? The reaction force accelerates the bat in a direction opposite that of the ball. The reaction force accelerates the bat in a upward direction.

A compound that changes color when it is placed into an acidic or a basic solution is a compound that changes color when it is placed into an acidic or a basic solution is protonated. amphiprotic. an acid-base indicator. a buffer.

Which alternative energy source would be expected to be the least dependent upon the weather? a. wind power b. solar power c. geothermal d. none of the above

Which is a metal alloy? A iron, used for making nails, free weights, and ornamental garden fencing B silver nitrate, a chemical compound used to develop photographic film C neodymium, an element in the lanthanide series used for making headphones D

What is Loschmidt's number? How is it related to Avogadro's number?

02:Matter and Change What is one difference between a mixture and a compound? A. A compound can only be separated into its components by chemical means. B. A compound consists of more than one phase. C.

Charlotte is planning an investigation to learn how temperature affects the amount of salt that can be dissolved in a liquid. In Charlotte's experiment, which of the following things should she control, or keep the same? A. the type of liquid used B.

Which property ofsulphuric acid makes it suitable to use as a catalyst for the preparation of esters?

Which is an example of a covalent bond? Chlorine accepts an electron from calcium to form a stable bond. Ions in a bar of pure iron are surrounded by a large number of valence electrons.

Which frequency has more energy? (high frequency or low frequency)