Explain why group 2 elements tend to form + 2 ions.

Which if the following is characteristic of all reversible systems at equilibrium?!

Human organ systems work together in many ways. Which statement accurately explains the relationship between two body systems? A. the excretory system regulates the temperature of the integumentary system. B.

The difference between fission and fusion is that ... A. Fusion is the splitting of a nucleus B. Fission is the joining of two nuclei C. Fission is the splitting of a nucleus D. There is not a difference

Consider the following three-step reaction pathway. Step 1: (CH3) 3AUPH3 → (CH3) 3Au + PH3 (fast) Step 2: (CH3) 3Au → (CH3) Au + C2H6 (slow) Step 3: (CH3) Au + PH3 - (CH3) AuPH3 (fast) Which is the correct list of reaction intermediates from the

Name two bases which react with dillute sulfuric acid to give zinc sulfate

Which of the following is true concerning atoms? A. Atoms are made of even smaller substances called subatomic particles B. The properties of atoms cannot be measured or observed

Intermolecular forces as a whole are also known as

What is the definition of a common ion as it applies to Le Chatelier's principle? A) an ion that is found in a wide variety of compounds B) an ion that is present in every sample of pure water C) an ion that is found dissolved in most aqueous

Water standing in the open at 33.0°C evaporates because of the escape of some of the surface molecules.

What could explain the changes in the insect's coloration over time A. The population of the incest increased B. The color of the surroundings changed C. A new color of predator was introuduce D. Females started to prefer darker males