Across
- 2. the total number of protons and neutrons
- 5. the degree to which a substance can harm living things
- 6. a measurement system based on powers of ten
- 7. a scale that measures how acidic or basic a substance is
- 8. a substance with a pH of 7
- 10. the basic unit of length in the metric system
- 11. a mixture with the same composition throughout
- 14. a characteristic that describes how a substance reacts
- 19. the number of protons in an atom
- 24. the amount of space an object takes up
- 26. mass is not created or destroyed in a chemical reaction
- 29. what a substance is made of
- 30. a method of measuring volume by how much water an object pushes aside
- 31. the ability of a material to be drawn into a wire
- 35. the amount of mass in a given volume
- 36. a dull coating that forms on metal due to a chemical reaction
- 37. a mixture with different parts visible
Down
- 1. the substance that does the dissolving
- 3. a characteristic observed without changing a substance
- 4. a measurement system used mainly in the United States
- 7. a positively charged particle in the nucleus
- 9. a negatively charged particle that moves around the nucleus
- 12. the basic unit of mass in the metric system
- 13. the ability of a material to be hammered into thin sheets
- 15. a combination of substances not chemically bonded
- 16. a substance made of two or more elements chemically bonded
- 17. the smallest unit of an element that keeps its properties
- 18. a neutral particle in the nucleus
- 20. the ability of a substance to burn
- 21. the amount of matter in an object
- 22. a homogeneous mixture
- 23. an electron in the outermost energy level
- 25. the basic unit of volume in the metric system
- 27. a substance that releases hydrogen ions (H⁺) in water
- 28. a temperature scale based on the freezing and boiling points of water
- 32. a substance that changes color to show pH
- 33. a substance that releases hydroxide ions (OH⁻) in water
- 34. the substance that is dissolved