Chemical and Physical Changes by Julie Day https://padlet.com/jday15/ChemicalPhysical 4JD's Understandings and Questions en-us 2018-02-23 08:40:10 UTC 2025-12-26 10:42:13 UTC hello@padlet.com - you can't always undo it; it may smell different, release gases, release light or give off or take in heat, change colour; a new substance is formed. jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234601810 Examples: getting wood back from ashes, cooking; new substances could be carbon dioxide or oxygen;

]]> 2018-02-23 08:44:49 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234601810 Does a chemical change need at least two things to make a chemical change? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234602723 2018-02-23 08:48:42 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234602723 - a change can be undone; remains the same substance as before the change; you can use the substance again; some physical changes can't be undone; jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234602827 Examples: breaking a plate - it's still a plate but it's just broken; water, changing to ice and to water vapour;

Appearance or form changes but the substance remains the same. ]]> 2018-02-23 08:49:11 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234602827 After a physical change, does the substance change? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234603793 2018-02-23 08:53:37 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234603793 Do we count eating as a chemical change or a physical change? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234603942 2018-02-23 08:54:22 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234603942 Do the acids in our stomach count as chemicals? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234604020 2018-02-23 08:54:46 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234604020 Is it true that many substances are created by accident? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234604090 2018-02-23 08:55:05 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234604090 Can there be a place where a change is both physical and chemical? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234604219 2018-02-23 08:55:44 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234604219 After you've changed something chemically, can you change something physically? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234604563 2018-02-23 08:57:23 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234604563 Can we observe what happens when we have a chemical change and physical change happening together? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234604621 2018-02-23 08:57:42 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234604621 Are stalactites and stalagmites created by physical or chemical changes? jday15 https://padlet.com/jday15/ChemicalPhysical/wish/234604800 2018-02-23 08:58:39 UTC https://padlet.com/jday15/ChemicalPhysical/wish/234604800