PLEASE ANSWER! 3. When the candle was lighted,it melted into liquid and became solid again after few seconds or in a minute. What causes these changes?I. Presence of heat II. Presence of of oxygenIII. Absence of oxygenIV. All of the above4. The candles melted by the application of heat. What changed took place when solid candles became liquid?A. Chemical B. MechanicalC. No changeD. Physical5.Which situation shows the presence of oxygen in a material?I. Lighting of a candleII. Burning of fuelsIII. Combustion of of enginesIV. Putting off a lighted candle6. The eggplant/apple in the experiment turned its color from white to brownish. Which statement is not NOT TRUE?A. The presence of oxygen caused change in its color.B. The absence of oxygen caused change in its color.C. The color of an apple/eggplant changed when it is exposed oxygen in the air.D. There is oxidation that happend when apple/eggplant was sliced and exposed in the air.7. Water is the primary cause of rust because water contains ______?A. OxygenB.ChlorideC.CarbonD.Hydrogen8.Joram noticed that when he mopped the floor using wet rugs, the moist in the floor disappeared after few minutes. What is the reason why the floor became dry?A. Presence of heatB. Absence of heatC. Presence of waterD. Absence of temperature9. When physical change in materials happened, There is______.I. Formation of new product or materialII. No formation of new product or materialIII. Formation of new shapeIV. formation of new colorA. I,III and IVB. II only C.III and IVD. II, III and IV10. Hannah observed that the left over foods on the table became watery, spoiled and had foul odor after 48 hours. What caused This change in the material?I. Presence of heatII. Absence of heatIII. Presence of oxygenIV. Absence of oxygenA. I and IIB. II and IIIC. I and IIID. II and IVAnswer only​