Across
- 3. The change in state from a gas directly to a solid caused by removing energy. It is the opposition of sublimation.
- 7. Anything that has mass and takes up space; a physical substance.
- 8. The measure of the amount of matter in an object.
- 9. The change in state from a liquid to a gas at the __________ point.
- 13. The change in state from a gas to a liquid caused by removing energy. It occurs at dew point and is the opposite of vaporization.
- 17. The attractive force between any two objects based on their masses.
- 18. This is done when a force acts on a moving object in the same or opposite direction of its motion or when energy is transferred from one object to another.
- 19. The smallest neutral particle of an element that retains the characteristics of that element. It is composed of a positive nucleus containing proptons and usually neutrons, surrounded by negatively charged electrons.
- 20. Scientific law that states that matter and energy cannot be created or destroyed, but can only transfer between objects or transform to a different form.
- 22. A physical combination of two or more substances.
- 25. The ability to do work.
- 26. The change in state from a liquid to a solid caused by removing energy.
- 28. The hotness or coldness of a substance; stated in degrees.
- 30. The change in state from a solid directly to a gas caused by adding energy. It is the opposite of deposition.
Down
- 1. A rigid state of matter in which particles align in a fixed arrangement.
- 2. A change in matter that doesn't alter its chemical identity.
- 4. A material made of only one kind of element or compound; not a mixture.
- 5. A change of one element into another element by changes occurring in the nucleus of the atom.
- 6. The changing of state from a solid to a liquid.
- 10. The change from one pure substance to another by the rearrangement of atoms in a chemical reaction.
- 11. A fluid state of matter in which the particles are free to move but are held close to each other.
- 12. The physical form of matter described by its physical characteristics. Phase of matter is another name for this term.
- 13. A pure substance formed by chemically combining two or more elements.
- 14. The change of state from a liquid to a gas below the boiling point but above the freezing point. It is a form of vaporization that occurs when particles near the surface of the liquid gain sufficient energy to escape the liquid.
- 15. A fluid state of matter made of extremely high-temperature ionized particles. This is the most common type of matter in the universe because stars are made from it.
- 16. The amount of space that an object occupies.
- 21. Two or more chemically bonded atoms.
- 23. A charged atom or group of atoms caused by a charge imbalance, which is produced by an unequal number of protons and electrons.
- 24. The force of gravitational attraction between an object's mass and its resident planet.
- 26. A push or pull on an object.
- 27. A fluid state of matter in which the particles move so fast and are so far apart as to have little interaction with each other.
- 29. A pure substance made of only one kind of atom.