Isotopes of an element have the same number of protons but a different number of d. neutrons.

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide.

What occurs when a cell engulfs large food particals