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Bio Ch 2 Test Yourse

Penn Foster Bio Ch 2 Test Yourself

QuestionAnswer
The atomic mass of an atom depends primarily on the number of protons and neutrons
The most abudnant element by weight in the human body is oxygen
How many more electrons does nitrogen require to fill its outer shell 3
what is a naturally occuring neutral charge neutrons
Name the ractants in NaCl- Na+Cl NaCl
A covalent bond in which electrons are not shared equally is called polar
Water flows freely but does not separate into individual molecules because water is cohesive
compounds have an affinity for water are said to by hydrophilic
Water freezes from the top down because ice is less dense than water
Water can absorbe a large amount of heat without much change in temp because it has a high heat capacity
Created by: armyhorses