Across
- 3. A substance made when two or more elements are chemically bonded
- 4. When frost forms from water vapor without becoming liquid first
- 5. A state of matter that keeps its shape and does not flow
- 6. When matter changes from one state (solid, liquid, gas) to another
- 8. What happens when ice turns into water
- 11. Two or more substances combined but not chemically bonded
- 16. A super-hot state of matter found in lightning and the sun
- 20. A reaction that gives off heat and feels warm
- 22. When a puddle disappears into the air on a hot day
- 23. A reaction that absorbs heat and feels cold
- 26. When water droplets form on a cold glass
- 27. When the smell of food spreads through the air
- 28. A state of matter that spreads out and fills any space available
- 29. How much "stuff" is packed into a certain space
Down
- 1. The rule that says matter cannot be created or destroyed
- 2. The substances that are made in a chemical reaction
- 3. When something new is created, like burning wood
- 7. When dry ice turns straight into gas without melting
- 9. The energy of movement that makes particles move faster or slower
- 10. A change where the substance stays the same, like cutting paper
- 12. The substances that start a chemical reaction
- 13. How much space something takes up
- 14. The amount of material in an object
- 15. How hot or cold something is, based on particle movement
- 17. A liquid mixture where one substance is completely dissolved
- 18. The process where water heats up and turns into steam
- 19. What happens when water turns into ice
- 21. A pure substance found on the periodic table
- 24. A state of matter that takes the shape of its container but keeps its volume
- 25. The force gas particles push on the walls of a container