End of Term Crossword

4. A change in state or appearance without forming a new substance.
5. – A reaction that absorbs heat.
7. A change where a new substance is formed.
8. – A reaction where a compound breaks down into simpler substances.
13. A high-energy state of matter where atoms are ionized.
14. – A reaction where a substance burns in oxygen to release heat and light.
16. – A reaction between an acid and a base forming salt and water.
19. A state of matter with no fixed shape or volume, expanding to fill any container.
21. The process of changing from a liquid to a solid.
22. When an object is denser than the liquid it is in, it will sink.
23. The mass per unit volume of a substance (measured in g/cm³ or kg/m³).
24. A state of matter with a fixed shape and volume.
25. A reaction that releases heat.
26. The temperature at which a liquid changes into a gas throughout the liquid.

1. The force exerted per unit area (measured in Pascals, Pa).
2. The amount of space an object or substance takes up (measured in cm³ or m³).
3. A state of matter with a fixed volume but takes the shape of its container.
6. A measure of the average kinetic energy of particles in a substance.
9. The temperature at which a solid changes into a liquid.
10. The process where a liquid turns into a gas at the surface.
11. The process where a solid changes directly to a gas without becoming a liquid.
12. The process of changing from a solid to a liquid.
14. – A gas cooling to become a liquid.
15. The substances that react in a chemical reaction.
17. – A reaction where a substance reacts with oxygen.
18. The process where a gas turns into a liquid.
20. The new substances formed in a chemical reaction.