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Biology 101 Final

Chapter 2

QuestionAnswer
The four most common elements in living organisms are C, H, O, N
How many elements are essential to life? 25
Which trace element is commonly added to table salt to prevent Goiter? Iodine
Which statement best describes a compound? Contains two or more different elements in a fixed ratio
Which particles are found in the nucleus of an atom? Protons and neutrons
Which best describes the atomic number of an atom? The number of protons in the atom
Table salt is formed when sodium donates its single outer electron to chlorine
A hydrogen atom has one electron. How many covalent bonds can hydrogen form? ONE covalent bond
A solution with a pH of 7 is neutral
Created by: beanziebopper
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