When an apple is cut, it often turns brown. What does the color change indicate? Select one: a. physical and chemical changes b. chemical change only c. physical change only

Elaborate on how the isotopes and their relative abundances affect the average atomic mass of an element. a. average atomic mass comes from the mass of the isotope nucleus and is proportioned by the relative abundances. b.

An object or material that can transfer its energy to other objects is called an?

Suppose element X is a poor conductor of electricity and breaks when hit with a hammer. Element Z is a good conductor of electricity and heat. In what area of periodic table does each element most likely belong?

what is the percentage yield of carbon disulfide if the reaction of 32.0g of sulfur dioxide produces 12.0g of carbon disulfide?

A linear graph with a slope of zero would indicate which of the following?

What type of overall charge, if any, does the balloon in Diagram B have? Explain how you determined your answer.

Move deep below the ocean's surface

The Ka of an acid is 1.3 x 10^-7. Based on the Ka and its relationship with Kw, what is the value of Kb? Use KaKb=Kw 1.3 x 10^-21 7.7 x 10^-15 1.3 x 10^-14 7.7 x 10^-8

A covalent bond is best described as Question 1 options: the sharing of electrons between atoms. the transfer of electrons. a bond between a metal and a nonmetal. a bond between a metal and a polyatomic ion.

From the list below, choose which groups are part of the periodic table