8O by Roopa Kv https://padlet.com/roopakv99/8O Chemistry en-us 2016-10-19 06:42:21 UTC 2016-10-19 06:43:02 UTC hello@padlet.com Group 4 https://padlet.com/roopakv99/8O/wish/131708728 Q.1)False , combustion is a chemical change
B)No, not everytime

It talks about why we should use dry wood and not wet wood as wet wood has a higher ignitions temperature so it can not light.

]]> 2016-10-19 08:07:17 UTC https://padlet.com/roopakv99/8O/wish/131708728 Group 2 thomasabraham563 https://padlet.com/roopakv99/8O/wish/131708732 Q1) A. NO
        B. NO
Q2)About the disadvantage of wetwood. Wetwood cant burn as good as dry wood.

]]> 2016-10-19 08:07:18 UTC https://padlet.com/roopakv99/8O/wish/131708732 Group1(a) https://padlet.com/roopakv99/8O/wish/131708759 Q1)[a]No.Combustion is not a physical change it's a chemical change because it cannot return to its original form.
[b].True.It is true because light energy forms when combustion take place.
Q2)We prefer dry wood because dry wood burns faster than a normal wood.]]> 2016-10-19 08:07:28 UTC https://padlet.com/roopakv99/8O/wish/131708759 Group 3 (Pranav, rinash Ahsan) https://padlet.com/roopakv99/8O/wish/131708788 1)False it is a chemical change
2)False not always
3)wet wood is waste and dry firewood produces more heat ,we recommend dry wood because it catches fire easily.(Ignition temperature)

]]> 2016-10-19 08:07:41 UTC https://padlet.com/roopakv99/8O/wish/131708788 Group 2 https://padlet.com/roopakv99/8O/wish/131708805 Ans-1= False,combustion is a chemical change because after combustion the object never comes back to its original form
Ans-2=no,not  

Question 2- dry wood is better as it has better ignition  ]]> 2016-10-19 08:07:49 UTC https://padlet.com/roopakv99/8O/wish/131708805 Group (6) https://padlet.com/roopakv99/8O/wish/131708928 Q1.No,it is a chemical Change.
Q2.No,Not always
Q3.The ignition point of wet wood is higher than the ignition point of dry wood.Therefore it burns faster.It is always recommended to use dry wood for burning.

]]> 2016-10-19 08:08:34 UTC https://padlet.com/roopakv99/8O/wish/131708928 Group 1 rashid and as https://padlet.com/roopakv99/8O/wish/131708931 2016-10-19 08:08:36 UTC https://padlet.com/roopakv99/8O/wish/131708931 Group 1 rashid ashutosh tazim  https://padlet.com/roopakv99/8O/wish/131708934 2016-10-19 08:08:37 UTC https://padlet.com/roopakv99/8O/wish/131708934 GROUP 5 seenasulfiker https://padlet.com/roopakv99/8O/wish/131709669
Q.1.
Option b is correct
Sound energy is caused in combution not always eg. Fire crackers
Q2. The ignition point of the wetwood is lower than the ignition point of the dry wood]]> 2016-10-19 08:12:54 UTC https://padlet.com/roopakv99/8O/wish/131709669