Why do elements that have positive ions occur on the left side of the periodic table?

Tissue engineering is beneficial for which of the following reasons? A. Stem cells are more powerful than any device. B. Stem cells are stronger than any other material. C. Stem cells automatically create a perfect organ shape and size. D.

How many total atoms are in ammonia, NH4OH?

Explain how hunter-gatherers affected the environment in which they lived.

As you go across a period the atomic radius decreases because ...

1. Write the complete electron configuration for each atom on the blank line. Lithium Fluorine Carbon Argon Sulfur Nickel Rubidium Xeon 2. What elements are represented by each of the following electron configurations? a. 1s2 2s2 2p5 b.

When mixtures of gaseous h2 and gaseous cl2 react, a product forms that has the same properties regardless of the relative amounts of h2 and cl2 used.

An atom of potassium-37 and an atom of potassium-42 differ in their total number of (1) electrons (3) protons (2) neutrons (4) positrons

Does a physical change occur more often than a chemical change?

List two solutions you can drink

What is the mass of 1.91 x 1023 C6H12O6 molecules?