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Biology Crossword Chapter 2 (Sections 1, 2 & 3)

Across
molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
one particular type of atom, and it cannot be broken down into a simpler substance by ordinary chemical mean
polymers that are made up of monomers called nucleotides
a mixture of substances that is the same throughout
a substance that dissolves in a solvent
two or more atoms held together by covalent bonds
a large molecule, or macromolecule, made of many monomers bonded together
molecules composed of carbon, hydrogen, and oxygen, and they include sugars and starches
forms through the electrical force between oppositely charged ions
an attraction between a slightly positive hydrogen atom and a slightly negative atom
nonpolar molecules that include fats, oils, and cholesterol
a substance made of atoms of different elements bonded together in a certain ratio
Down
chains of carbon atoms bonded to hydrogen atoms
forms when atoms share a pair of electrons
the substance that is present in the greater amount and that dissolves another substance
Each subunit in the complete molecule
compounds that remove H+ ions from a solution
the smallest basic unit of matter
a compound that releases a proton—a hydrogen ion (H+)—when it dissolves in water
a polymer made of monomers called amino acids
A solution’s acidity, or H+ ion concentration, is measured by this scale
The attraction among molecules of different substances
an atom that has gained or lost one or more electrons
The attraction among molecules of a substance