13. The freezing point of water is the same as its ______.*1 pointA. boiling point.B. evaporation point.C. melting point.D. sublimation point.14. Which state of matter undergoes changes in volume most easily?*1 pointA. solidB. liquidC. gas 15. Which statement best explains the fact that gases can be compressed?*1 pointA. The particles in a gas do not have a fixed volume.B. The particles in a gas are very far apart.C. The particles in a gas have no force of attraction (bonds) between them.D. The particles in a gas are constantly moving very rapidly.16. Which of the following states of matter has the highest density?1 pointA. SolidB. LiquidC. Gas17. In which state of matter are particles held together by weak forces of attraction and are able to move freely over long distances?*1 pointA. SolidB. LiquidC. Gas18. Particles of all matter are in constant random motion.*1 pointA. TrueB. False19. These particles are held together by very strong forces of attraction*1 pointA. SolidB. LiquidC. GasD. Plasma20. What happens to particles of liquid when they are heated?*1 pointA. They slide over one another faster and move further apartB. They slow down and compressC. They stop movingD. They slide over one another slower and move closer together

A) A ____________ has definite volume but not a definite shape.B) The process of change of a substance from the liquid state to its gaseousstate at a particular temperature is called boiling or ____________.C) ____________ exerts pressure in all directions.D) A molecule having more than two atoms is called____________ molecule.E) ____________are rigid and they have a definite shape.F) Gases do not show the property of ____________.Q 2) Mention the distinguishing properties of solids, liquids and gasesbased on the property mentioned in the first column.PROPERTY SOLID LIQUID GASPRESSURERIGIDITYEXPANSION ONHEATINGINTERMOLECULARFORCESFLUIDITYQ 3) DEFINE:A) Cohesive force______________________________________________________________________________________________________________________________________________________________________________________________________________________________B) Adhesive force______________________________________________________________________________________________________________________________________________________________________________________________________________________________C) Intermolecular force of attraction______________________________________________________________________________________________________________________________________________________________________________________________________________________________Q 4) Draw the molecular model of the following and mention five generalproperties of each matter mentioned below.SOLID GAS__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

The pressure of a gas increases with an increase in temperature. Question 6Select one:TrueFalseQuestion 7Not yet answeredMarked out of 1.00Flag questionTipsQuestion textWhen frozen carbon dioxide immediately changes from a solid to a gaseous state it is an example of ...Question 7Select one:sublimationcondensationevaporationionizationClear my choiceQuestion 8Not yet answeredMarked out of 1.00Flag questionTipsQuestion textThe atmosphere exerts pressure on the surface of liquids.Question 8Select one:TrueFalseQuestion 9Not yet answeredMarked out of 2.00Flag questionTipsQuestion textCalculate the density of an object in g.cm-3 by using the following information. Just write the numerical value.Length = 1 cm3   Width = 2 cm3   Depth = 3 cm3Mass = 900 g(Do not type the unit)Answer:Question 9Question 10Not yet answeredMarked out of 5.00Flag questionTipsQuestion textMatch the following phrases:Loss of heat energyAnswer 1 Question 10Absorption of heat energyAnswer 2 Question 10Changes in state of matterAnswer 3 Question 10Matter changes from liquid to a solidAnswer 4 Question 10Matter changes from solid to a liquidAnswer 5 Question 10

Match the following items.1. low energy gas 2. matter is continuously in motion Kinetic Molecular Theory 3. rapid, random motion solid 4. relates pressure and volume Charles's Law 5. relates volume and temperature Boyle's Law NEXT QUESTION

1. Which phase of matter has definite volume but no definite shape?1 pointa. solidb. liquidc. gasd. plasma2. This phase of matter includes charged particles and its atoms behave much like another phase.1 pointa. solidb. liquidc. gasd. plasma3. What must change in order for a phase change to occur?1 pointa. Heat energy must increase.b. Heat energy must increase OR decrease.c. Heat energy must decrease.d. Heat energy remains the same.Other:4. Solid changes to liquid.1 pointa. Evaporationb. Sublimationc. Condensationd. Melting5. Gas changes to a liquid.1 pointa. Condensationb. Freezingc. Evaporationd. Deposition6. Rusting of iron is an example of a _____________.1 pointPhase changeChemical changePhysical changeDouble replacement reaction7. Example of physical change. (Check all that would apply.)1 pointPopsicle melting.Broken window.Baked chocolate chip cookies.Chopped firewood.

The process of LIQUID water changing to________ ice. (FREEZING) The process in which SOLID change to a __________.(MELTING) The process in which a LIQUID boils and changes to a _______.(VAPORIZATION) The process in which a GAS changes to ________ .(CONDENSATION) The process in which _________ directly change to gases. (SUBLIMATION) The process in which GAS directly changes to _______.(DEPOSITION)