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BIO 150 Chapter 2--Chemistry

Teacher:
Across
Polar covalent molecule
Water molecules stick to other molecules
Water loving
Equal sharing of electrons results in this type of bond
High pH value
Bonds between atoms form ________
Atoms have this type of charge
Atoms with different numbers of neutrons are called
Positive subatomic particle
Four most abundant elements in living organisms
Down
The pH of the stomach
Water molecules stick to themselves
Weak bonds
Number of protons
Resists changes in pH
Protons + neutrons
The pH of most cells is
___ is less dense than water.
Negative subatomic particle
Smallest unit of matter
Sodium chloride (NaCl ) forms from this type of bond