Chemical Reactions by William Hannah - BDC School https://padlet.com/whannah4/duhnd14jqgiihzb9 Post your questions, comments, and concerns. en-us 2025-04-23 11:33:05 UTC 2025-06-04 07:51:29 UTC hello@padlet.com https://padlet.net/icons/png/1f4ac.png https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478585257 We know It because when we put a light inside It makes a pop sound so we know there's hydrogen in the substance

]]> 2025-06-04 07:46:11 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478585257 Answer - Lara https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478585645 I know a gas is produced when I can observe fizzing, the glass turns opaque, and the temperature changes. I can tell it was hydrogen produced when it burns with a pop.

]]> 2025-06-04 07:46:32 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478585645 Alessio https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478586599 We know a gas was produced and that it was hydrogen because we heard a pop sound when placing a light near the test tube.


]]> 2025-06-04 07:47:28 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478586599 https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478586749 There are 5 signs to recognise a chemical reaction:

  1. sound produced

  2. temperature change

  3. bubbling and fizzing

  4. flame produced

  5. gas given off

]]> 2025-06-04 07:47:31 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478586749 Lara https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478587064

  • A new substance is produced

  • There is a change in color

  • Effervescence

  • Change in temperature

  • Gas or a solid produced

  • flame or sound produced

    • ]]>     2025-06-04 07:47:49 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478587064     seba's answer https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478587506 because since we use a light inside and it makes pop we know that is hydrogen.


    ]]>     2025-06-04 07:48:14 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478587506     I know because when we put a light inside, it make a sound, so we know that the hydrogen in the substance https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478587653 2025-06-04 07:48:22 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478587653 Alessio https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478588703

  • When you see bubbles

  • change in colour

  • change in temperature

  • light being produced

  • sound being produced

    • ]]>     2025-06-04 07:49:14 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478588703     seba https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478588863 I know 3 that are

    sound

    temperature

    bubbles


    ]]>     2025-06-04 07:49:25 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478588863     a new substance is produced, there is a change in color, Effervescence, gas or a solid produced, flame or sound produced https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478590945 2025-06-04 07:51:28 UTC https://padlet.com/whannah4/duhnd14jqgiihzb9/wish/3478590945