RPA:04 temperature Change Flashcards
1
Q
Aim
A
Investigate the variables that affect temperature change in chemical reactions
2
Q
Step one
A
Measure 25 cm³ of hydrochloric acid into a polystyrene cup
3
Q
Step two
A
 Place cup inside beaker to make it more stable
4
Q
Step three
A
Measure and record temperature of acid
5
Q
Step four
A
Add 5 cm³ of sodium hydroxide into polystyrene cup and place a lid on the cup whilst stirring solution With thermometer
6
Q
Step five
A
Record temperature on thermometer when it stops changing and remains constant
7
Q
Step six
A
Repeat step 4 to add further 5 cm³ of sodium hydroxide until 40 cm³ has been added
8
Q
Step seven
A
Calculate mean maximum temperature reached for each of the sodium hydroxide solutions