The first shell can hold a maximum of two electrons. How does this explain the valence of hydrogen?

Match each substance with its correct definition. a. neutral b. base c. acid d. pH scale e. phenolphthalein 1. a substance with a pH of 3 2. a substance with a pH of 10 3. a substance with a pH of 7 4. an indicator 5.

Write the symbol of the element that has an electron configuration of 1s22s22p6.

Name two fluid technologies that make use of air

A natural gas stove transforms R energy into P energy. What do R and P most likely represent? A. R represents chemical energy, P represents thermal energy B. R represents thermal energy, P represents chemical energy C.

Which of the following bonds connect amino acids in the primary structure of a protein?: A) Hydrogen Bonds B) Phosphodiester Bonds C) Peptide Bonds D) Alpha 1,4-glycosidic Bonds E) Ionic Bonds

Internal respiration is the transfer of oxygen and carbon dioxide from the lungs to the tissue cells of the body. True or False

Which element is a metalloid? 1. Al 2. Ar 3. As 4. Aa

You move a 25N object 4 meters. Find the work you did

What is the relationship between matter and elements

Which of these would be an appropriate way to describe the concentration of orange candies? Check all that apply the number of orange candies divided by total number of candies the mass of orange candies divided by total mass of candies the volume