matter

2. - The temperature at which a liquid turns into a gas.
5. - Forces that act on objects without physical contact, like gravity and
9. are in constant motion.
11. - A theory that describes how matter is made up of tiny particles
13. - An experiment where only one variable is changed at a time to
19. - Ice that forms on the surface of water, protecting aquatic life by
20. its effects.
24. - Forces that pull particles together.
26. - The mass per unit volume of a substance.
27. - The amount of space an object occupies, which can change during a phase

1. - When matter increases in volume due to heating.
3. a liquid.
4. - A tool that measures temperature by the expansion or contraction
6. - When matter decreases in volume due to cooling.
7. - A force that pulls objects towards the center of the Earth.
8. - A temperature scale where 0°C is the freezing point of water and 100°C is
10. boiling point.
12. the water underneath from freezing.
14. - The force exerted by magnets when they attract or repel each other.
15. - Increasing the temperature of a substance, causing particles to move faster.
16. - A state of matter with a definite volume but no definite shape.
17. - The process of matter changing from one state (solid, liquid, gas) to
18. - The amount of matter in an object, which remains constant during a phase change.
21. - A state of matter with a definite shape and volume.
22. - The temperature at which a liquid turns into a solid.
23. - A state of matter with no definite shape or volume.
25. - Decreasing the temperature of a substance, causing particles to move slower.