Across
- 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
Down
- 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