Across
- 3. to derive by reasoning
- 7. noticing or perceiving
- 8. a seeking or request for truth, info or knowledge
- 11. a numerical measure of acidity or hydrogen ion activity
- 13. the factor being tested
- 14. scale numeric range that quantifies the relative concentrations of hydronimu and hydroxide ions in a solution
- 16. key a key for the identification of organisms based on choices between alternative characters
- 17. in an experiment an element that remains unchanged or unaffected by other variables, a standard of comparison
- 19. the forming, sorting, grouping or dividing into classes to form ordered arrangement having defined range of characteristics
- 25. measurable info
Down
- 1. science of classification of things into groups such as species, genus, family, and order
- 2. investigation into a subject to discover or revise facts
- 4. a statement that can be tested experimentally
- 5. method procedure for investigating problems of a scientific nature
- 6. having neither acid nor alkaline qualities
- 9. observable info based on physical characteristics
- 10. a diagram representing a system of connections or interrelations among 2 or more things by a number of distinctive dots, line or bars
- 12. the chemical group or ion OH-tht consists of one atom of hydrogen and one of oxygen
- 15. to develop an assumption of an anticipated outcome
- 17. to organize a group using common attributes, qualities, or traits
- 18. any substance with a pH lower than 7.0
- 20. the measure of how many hydroxyl ions a substance has
- 21. one of a series of steps taken to accomplish an end
- 22. the measure of how much hydrogen ions a substance has
- 23. a substance that gives off hydroxyl ions when dissolved in water, has pH above 7.0
- 24. a sheet that has information in a table or systematic arrangement of columns and rows