Intro to Biology & Basic Chemistry

3. the smallest unit of matter that retains properties of an element
10. a type of strong chemical bond in which 2 atoms share 1 or more pairs of valence electrons
16. one that is designed to compare an experimental group with a control group
17. a liquid that is a homogeneous mixture of 2 or more substances
18. collecting and analyzing observations that can lead to important conclusions based on a type of logic
20. the tendency toward a relatively stable equilibrium between interdependent elements
21. having no affinity for water, fear of water
23. bond a type of weak chemical bond that is formed when the slightly + hydrogen atom to a slightly negative atom (both are polar)
24. is the science of defining and naming groups of biological organisms on the basis of shared characteristics
25. tentative explantation for a phenomena, fact, or scientific inquiry
26. has membrane enclosed organelles
27. a process in which individuals that have certain inherited traits tend to survive and reproduce
28. a group of organs
30. anything that takes up space and has mass

1. descent with modification
2. a subatomic particle with a single positive electrical charge
4. a specialized center of body function
5. a substance that is dissolved in a solution
6. water is the most versatile known
7. a subatomic particle with a single negative electrical charge
8. loves water; has an affinity for water
9. a compound resulting from the formation of an ionic bond
11. a substance that increase the hydrogen
12. new properties that arise with each step upward in the hierarchy of life
13. a chemical bond resulting from the attraction between oppositely charged ions
14. the act of making an educated guess as to the outcome of a situation
15. the sum of the number of protons and neutrons
19. lacks a nucleus or other membrane enclosed organelles
22. a substance that reduces the hydrogen ion concentration of a solution
29. a subatomic particle having no electrical charge