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Chapter 2 - Basic Chemistry
Across
2. Modified lipid containing phosphorus.
5. Atom with a positive or negative electric charge.
6. Main carbohydrate stored in animal cells; a polysaccharide.
8. Process by which a large molecule is synthesized by covalently bonding smaller molecules together.
11. Group of chemical substances including certain hormones and cholesterol; they are fat soluble and contain little oxygen.
12. A substance that releases hydrogen ions when in solution (compare with Base); a proton donor.
13. Organic molecule that stores and releases chemical energy for use in body cells.
14. Literally, one sugar; building block of carbohydrates; e.g., glucose.
15. The symbol for hydrogen ion concentration; a measure of the relative acidity or alkalinity of a solution.
16. Organic compound composed of carbon, hydrogen, and oxygen; includes starches, sugars, cellulose.
18. Chemical bond formed by electron transfer between atoms.
19. Complex substance containing carbon, oxygen, hydrogen, and nitrogen; composes 10% to 30% of cell mass.
20. Class of organic molecules that includes DNA and RNA.
Down
1. Chemical bond created by electron sharing between atoms.
3. Process in which water is used to split a substance into smaller particles.
4. Particle consisting of two or more atoms joined together by chemical bonds.
7. Literally, double sugar; e.g., sucrose, lactose.
9. Weak bond in which a hydrogen atom forms a bridge between two electron-hungry atoms. An important intramolecular bond.
10. Different atomic forms of the same element, vary only in the number of neutrons they contain; the heavier species tend to be radioactive.
17. Organic compound formed of carbon, hydrogen, and oxygen; examples are fats and cholesterol.