Across
- 4. A heat treatment that reduces brittleness and increases toughness after hardening.
- 9. Metals that do not contain iron and do not rust easily.
- 10. A pure substance made of only one type of atom.
- 12. When a material expands in size as its temperature increases.
- 13. When substances combine or break apart to form new substances.
- 15. Steel with a low carbon content; softer, more ductile, and easier to shape.
- 16. How much a material opposes the flow of electrical current.
- 17. A reddish metal that is an excellent conductor of electricity and heat.
- 19. A chemical bond formed when atoms share electrons.
- 21. A reaction in which one element replaces another in a compound.
- 23. The negative electrode where reduction happens in a chemical reaction.
- 25. A metal often used to coat other metals to protect them from corrosion.
- 33. Steel mixed with chromium to resist rust and corrosion.
- 37. A chemical reaction where a substance loses electrons, often when reacting with oxygen.
- 38. How brittle or dense an object is
- 39. The amount of matter in an object.
- 40. The amount of space an object or substance takes up.
- 42. Steel with a high carbon content, making it very hard and strong but less ductile.
- 44. The ability of a metal to be hammered or rolled into thin sheets without breaking.
- 45. Metals that contain iron
- 46. The smallest unit of an element that keeps its chemical properties.
- 47. How tightly matter is packed.
- 48. The unit used to measure electrical potential (the “pressure” behind electric flow).
Down
- 1. A strong metal used widely in construction that rusts easily when exposed to oxygen and moisture.
- 2. How well a material transfers heat.
- 3. To heat a metal and let it cool slowly to make it softer and less brittle.
- 5. A characteristic describing how a material behaves under force, such as strength or hardness.
- 6. The positive electrode where oxidation happens in a chemical reaction.
- 7. An atom or molecule with an electric charge caused by losing or gaining electrons.
- 8. Two or more atoms chemically bonded together.
- 11. A mixture of two or more metals
- 14. How well a material lets electricity or heat pass through it.
- 18. A very lightweight, reactive metal often used in alloys to make them stronger.
- 20. Heat treatment that increases a metal’s hardness and strength.
- 22. A substance made of two or more different elements chemically bonded.
- 24. A shiny element that conducts heat and electricity well and can be shaped or formed.
- 26. The gradual destruction of a metal caused by chemical reactions
- 27. A characteristic that can only be seen when a substance changes into a new substance
- 28. A material’s ability to resist scratching or denting.
- 29. How much pulling force a material can handle before it breaks.
- 30. A lightweight, silvery metal known for good corrosion resistance.
- 31. Able to return to its original shape after being stretched or bent.
- 32. The force that allows some materials to attract or repel others with magnetic properties.
- 34. An alloy mainly made of iron and carbon, strong and widely used in construction.
- 35. A substance that conducts electricity when dissolved or melted because it forms ions.
- 36. A reaction where two different metals in contact with an electrolyte produce electric current and corrosion.
- 41. The ability of a material to be drawn into wires without breaking.
- 43. A characteristic that can be observed or measured without changing the substance.