What is the aim of the displacement reaction practical?
To investigate the temperature change during a displacement reaction.
Answer in your head, out loud, or on paper, then tap the card to flip.
Why is the polystyrene cup placed in a beaker?
To insulate it.
Answer in your head, out loud, or on paper, then tap the card to flip.
Why is cotton wool placed around the polystyrene cup?
To provide additional insulation.
Answer in your head, out loud, or on paper, then tap the card to flip.
Displacement reactions are exothermic. What does this mean?
Energy is released during the reaction.
Answer in your head, out loud, or on paper, then tap the card to flip.
How can the temperature change demonstrate that energy is released?
The increase in temperature shows that heat energy has been released.
Answer in your head, out loud, or on paper, then tap the card to flip.
What is the purpose of the lid?
To prevent heat loss.
Answer in your head, out loud, or on paper, then tap the card to flip.
Why measure initial and final temperatures?
To calculate temperature change to show the reaction is exothermic.
Answer in your head, out loud, or on paper, then tap the card to flip.