Across
- 2. is a greenish-yellow gas with a strong smell; it’s highly reactive. It’s commonly used to disinfect water supplies and make bleach.
- 4. conducts electricity very well; it’s widely used for electrical wiring due to its ability to efficiently carry electric current.
- 8. is a colorless gas that we breathe in to live. It makes up about 21% of the atmosphere and is essential for respiration in animals and photosynthesis in plants.
- 9. is an inert gas that glows bright red when electricity passes through it. It’s commonly used in neon signs because of its bright colors.
- 10. is an inert gas that doesn’t react with other elements easily. It’s often used in light bulbs to prevent the filament from burning out quickly.
- 12. resists corrosion well; it’s commonly found mixed with other metals like iron or copper to make alloys such as stainless steel or coins.
- 14. is a soft, silvery-white metal that is very light. It’s used in rechargeable batteries for phones and electric cars because it can store a lot of energy.
- 15. helps improve the strength of steel when added during production; it’s also important for various biological processes within living organisms.
- 17. is a shiny gray metal that’s lightweight but strong. It’s used in fireworks, airplane parts, and even dietary supplements because it’s important for our health.
- 19. is a yellow nonmetal known for its distinct smell when burned (like rotten eggs). It’s used in making sulfuric acid, fertilizers, and matches.
- 21. is a hard, brittle crystalline solid with a blue-grey metallic luster. It’s mainly used in computer chips and solar panels because it conducts electricity well.
- 22. protects against rusting when coated on iron or steel surfaces (galvanization); it’s also important for human health as part of many enzymes.
- 24. is a soft, silvery-white metal that’s vital for plant growth and human health; it’s found in bananas and helps regulate fluids in our bodies.
- 25. is a colorless, odorless gas that is lighter than air. It is the second lightest element and is often used in balloons because it doesn’t catch fire and makes them float.
- 26. is a soft, silvery-white metal that reacts violently with water. It’s found in table salt (sodium chloride) and plays an important role in our bodies for nerve function.
- 27. is a rare metal that’s lightweight yet strong; it’s often added to aluminum alloys to improve their strength without adding much weight.
Down
- 1. is a pale yellow gas that is highly reactive. It’s used to make toothpaste (to prevent cavities) and Teflon (non-stick cookware), but it’s dangerous if not handled properly.
- 2. is a nonmetal that forms the basis of all life on Earth. It can exist in different forms like graphite (pencil lead) or diamond (the hardest natural substance). Carbon compounds are found in everything from food to plastics.
- 3. is a hard, grayish metal that is lightweight and strong. It’s used in aerospace components and X-ray equipment because it can withstand high temperatures and doesn’t absorb X-rays.
- 5. is a metalloid, meaning it has properties of both metals and nonmetals. It’s used in glassmaking and detergents, as well as in some fertilizers to help plants grow.
- 6. is a colorless gas that makes up about 78% of the Earth’s atmosphere. It’s essential for life because it’s part of amino acids, which are the building blocks of proteins.
- 7. has magnetic properties; it’s often mixed with other metals to create superalloys or batteries, especially lithium-ion batteries where it enhances performance.
- 10. is a lightweight silver-colored metal that’s resistant to corrosion. It’s widely used for making cans, foil, and airplane parts due to its strength-to-weight ratio.
- 11. is an essential mineral found mostly in bones; it helps keep them strong. Dairy products like milk are rich sources of calcium.
- 13. is a nonmetal essential for life; it’s found in DNA and ATP (energy-carrying molecules). It’s also used in fertilizers to help plants grow.
- 16. is a grayish metal that’s primarily used to make steel stronger by adding toughness without increasing weight significantly; it’s also involved in some battery technologies.
- 18. is one of the most abundant metals on Earth; it’s crucial for making steel which we use everywhere from buildings to vehicles due to its strength.
- 20. is known for being very strong yet lightweight; it resists corrosion well. It’s commonly used in aerospace applications as well as medical implants due to its biocompatibility.
- 23. gives stainless steel its shiny appearance; it’s resistant to tarnishing and corrosion. This makes it useful not just for steel but also for plating other metals to protect them from rusting.