Across
- 1. The oxygen you breathe is made of only one type of atom
- 5. Two hydrogen atoms and one oxygen atom making water
- 6. Helium filling balloons without reacting with anything
- 12. A metal spoon getting hot after sitting in a pot of soup
- 13. Why a rock sinks in water but a piece of wood floats
- 19. Ice cubes melting into water in your glass
- 22. Salt is made from sodium and chlorine combined
- 23. The particles moving through wires when you turn on a lamp
- 24. Iron used to build bridges because it’s strong and conducts heat
- 25. The tiny building blocks inside everything from your desk to your drink
- 28. Copper wires carrying electricity in your home
- 30. The brittle graphite in your pencil
- 31. Why a gold ring feels heavier than an aluminum ring of the same size
- 32. A wooden chair that keeps its shape
Down
- 2. Silicon chips inside your computer
- 3. A glass of distilled water with nothing else mixed in
- 4. Why a bowling ball is harder to lift than a soccer ball
- 7. The positive particle that makes hydrogen different from helium
- 8. Air pushing on the walls of a tire to keep it inflated
- 9. Heat from the sun warming the sidewalk
- 10. The force that keeps the atoms in sugar stuck together
- 11. Checking a thermometer to see if it’s hot enough to bake cookies
- 14. The chart scientists use to organize all the elements
- 15. Air filling up a balloon and spreading out inside it
- 16. Butter turning soft and liquid on a warm day
- 17. The reason oxygen and carbon are different—it’s about their proton count
- 18. Your backpack, your book, and even the air—they all take up space
- 20. The neutral particle sitting inside the nucleus of an atom
- 21. When water in a kettle starts steaming on the stove
- 26. Ice, water, and steam are all the same substance in different states
- 27. Measuring how much space juice takes up in a measuring cup
- 29. Milk taking the shape of your glass