Across
- 4. Action - It changes the color of the petals of a flower. It also gives trees and other plants a boost in drawing nutrient-rich water from the soil up the stem and into the leaves.
- 5. solids - The molecules of this solid are arrange in a regular repeating three-dimensional structure called a crystal lattice, producing a crystalline solid.
- 7. - a process of changing solid to gas directly without passing through the liquid phase.
- 8. Solids - This type of solid is considered to have low melting points, very soft, and non-conductors. This force is the weakest among the types that hold solids together. It is held together by the same kinds of forces that hold liquids together.
- 11. tension - can be thought of as a very thin layer of particles that are more strongly attracted to each other than they are to the particles surrounding them.
- 17. - a change of gas into its liquid form.
- 18. Molecular Theory - A theory for gases established to explain the properties of gases.
- 20. - It is an intermediate phase between solid and gas. They do not have a fixed position, they can move freely. The volume is constant because of the attraction between the particles. It has no definite shape because the movement of the particles causes it to vary in shape.
- 21. - It is made up of electrically-charged particles, hot ionized gas where electrons break free.
- 23. change - This change happens on a molecular level. A change in color shows obvious chemical change that the substance has undergone. Most chemical changes are not visible.
- 24. Temperature - The temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied.
- 25. changes - It is defined as the change of phrase from one form to another which is affected by temperature, pressure, and energy.
- 26. - a phase change from solid to liquid through the application of heat.
- 27. point - The temperature at which the vapor pressure of the liquid becomes equal to the pressure in the surrounding of the liquid (1 atm or 760 mmHg). It occurs when the vapor pressure of liquid is equal to or greater than the atmospheric pressure.
Down
- 1. pressure - The pressure required to liquefy a gas at its critical temperature.
- 2. - the property of a liquid to easily vaporize at normal temperatures.
- 3. - A change of phase from liquid to solid.
- 6. pressure - the pressure exerted by the vapor/liquid in a closed container.
- 8. - Solids that are held together by metallic bonds, involving electron sharing throughout the body of the metal. It has a wide range of melting points but almost all melt above room temperature. It ranges from soft to hard. They are good conductors of both heat and electricity.
- 9. - Its particles move very quickly because of the empty space surround them. It can be easily compressed due to this reason. They fill the space of the container that they occupy.
- 10. Condensate - These are atoms that merge at super low temperatures to form a single object that behaves like a wave.
- 12. - The process by which water is converted to its gaseous form from its liquid form. It occurs when surface particles gain enough kinetic energy toescape the system as the particles of liquid collide with one another and with the sides of the container.
- 13. Condensate - It is a state of matter of a dilute gas of bosons cooled to temperatures close to absolute zero, or the lower limit of the thermodynamic scale.
- 14. - Their particles are held together very tightly and moves through vibration. It is very strong and hard to break.
- 15. - It has a disordered structure at the microscopic level. It has two characteristics properties. When cleaved or broken, they produce fragments with irregular, often curved surfaces, and they have poorly defined patterns when exposed to x-rays because their components are not arrange in a regular array.
- 16. solids - These are held together by ionic bonds. These forces are much stronger than the ones in molecular solids. They have high melting points, described to be hard. They are non-conductors of electricity unless melted or dissolved into a liquid solution.
- 19. Network Solids - These are giant covalent substances held together by covalent bonds. These are the strongest kind of forces holding solids together. They hvae extremely high melting points, making them extremely hard. Mst of them do not melt at all and decomposes before melting.
- 21. Change - A change that involves changing the physical properties of a substance, examples of physical properties include color, volume, shape, and phase changes.
- 22. - a measure of how much a liquid resists flowing freely. It can be reduced by heating the liquid.
- 24. - accounts for the surface tension of a liquid. It is the tendency for the same kind of particles to be attracted to one another. They are greater beneath the surface of the liquid, where the particles are attracted to each other on all sides.