An atom becomes negatively charged by

Craters visible on the moon's surface provide further evidence of A) frequent asteroid impacts. B) periodic volcanic eruptions. C) frequent landings of spacecraft. D) the long-ago presence of ice on the moon.

Which best describes a hydrate? It has water molecules bonded directly to it. It lacks water molecules in its crystal lattice. It lacks hydrogen and oxygen atoms, which make up water. It has water molecules incorporated into its crystal lattice.

Does a virus need to be inside a living cell in order to reproduce

How many hydrogen moles are in 2.5 moles of aspartame c14h18n2o5

Match the term with the definition. Match Term Definition Condensation A) A phase change from a liquid to a solid Evaporation B) A phase change from a liquid to a gas Sublimation C) A phase change from a solid to a gas Freezing D) A phase change

Ethanoic acid and 1-butanol can react to produce water and a compound classified as an 1) aldehyde 2) amine 3) ester 4) halide

Sodium metal reacts with water to form aqueous sodium hydroxide and hydrogen gas. which equation below best describes the balanced equation for this reaction?

2H2 + O2 - - > 2H2O If 16 mol of oxygen were reacted with excess hydrogen gas, how many moles of water would be produced?

Which subatomic particle identifies an atom as that of a particular element? how is this particle related to the atoms atomic number

Which of the following prefixes means seven