Using the periodic table, complete the table to describe each atom. Type in your answers.

Particles are arranged in a crystal structure in a sample of (1) H2 (g) (3) Ar (g) (2) Br2 (l) (4) Ag (s)

The Lewis structure of HCl has a double-bond. TRUE FALSE

How many neutrons are in a neon atom

When a chemical reaction and its reverse are occurring at the same time and at the same rate, the reaction has achieved a. displacement. c. imbalance. b. equilibrium. d. decomposition.

Which statement correctly describes why transmutation changes the identity of an atom? A. It occurs at the level of the nucleus but only affects neutrons. B. It occurs at the level of the nucleus and can affect protons. C.

The reaction CH3NC? CH3CN is called an isomerization reaction andinvolves the breaking of a C-N bond and subsequent formation of a C-C bond-the reactant andproduct have the same molecular formulas and so are isomers.

Following my previous question: How is it possible for one substance to act both polar and non-polar? How is the polar/non-polar nature of a substance useful?

How is petrol separated from the mixture of hydrocarbons in crude oil?

The following chemical reaction takes place in aqueous solution: MgBr2 (aq) + 2KOH (aq) →Mg (OH) 2 (s) + 2KBr (aq) Write the net ionic equation for this reaction.

How many molecules are in 1.2 moles of H20?