Blog

Naturally occurring boron consists of two stable isotopes:  10B with a mass of 10.0129 amu and 11B with a mass of 11.0093 amu.   Without doing calculations, you could conclude that the most abundant isotope is:

Given the following information, complete the blanks in the table.   Z =  ? A =  65 Element Symbol ? Number of protons ? Number of neutrons ? Number of electrons ? _______ _______ _______ _______ _______

Ions are atoms that have gained or lost electrons.

Identify two components of the biosphere in the image below and two components that WOULD NOT be part of the biosphere. You must state things that are in the image, you cannot speculate that there are other hidden things.

Which of the following represents a hydrolysis reaction

Label the following as either a theory or law. “Energy can neither be created nor destroyed – only converted from one form of energy to another.”

Where is energy stored in chemical compounds?

What pH is considered neutral?

An atom has 20 protons. What atom is being described?    

Extra Credit For (5) extra credit points, choose one of the three questions below and respond in 3 or more sentences. Be specific in your response and use proper terminology when supporting your answer. You will not receive any credit for any response less than 3 sentences long.   Wallace is in the hospital with a diagnosis of acidosis (the body’s pH is lower and more acidic than it should be). Wallace is experiencing weakness, fatigue, and muscle pain because he has a low level of the protein Albumin, caused by his acidosis. Why is he experiencing the decreased Albumin levels? Mary is conduction an experiment where she is attempting to make new chemical compounds. She is attempting to make a chemical compound between Argon and Oxygen. Both Argon and oxygen are gases at room temperature. Oxygen is readily available in the environment and Argon is a noble gas. Oxygen’s outermost ring has 6 valence electrons and Argon’s has 8. She would be the first person in history to create this compound. Why has this compound never been created before and can Mary create this? A geneticist has discovered a new mutation in a nucleic acid structure. This mutation occurs on a strand of nucleotides and it has been determined that the mutation only occurs on strands with the Uracil base. Which processes in organisms would the mutation of this nucleic acid affect and why?