2.1 & 2.2 Chemical Reactions And Energy Flashcards
1
Q
What is the equation for work?
A
Work = force × distance
2
Q
What is one joule a measure of?
A
The amount of energy required to raise a 1kg substance 10cm against the force of gravity
3
Q
What is one calorie a measure of?
A
The amount of heat required to raise the temperature of exactly 1g of water by 1°C
4
Q
What is one food calorie equivalent to?
A
1000 cal = 1 Kcal
5
Q
What is the equation for potential energy?
A
E = mgh
6
Q
What is the equation for Kinetic energy?
A
E = ½mv²
7
Q
What are the 3 types of energy?
A
- Electromagnetic
- Nuclear
- Chemical
8
Q
What is the first law of thermodynamics?
A
The energy in the universe is constant
9
Q
What is the equation for change in a systems internal energy?
A
Dela E = q + w
Where q = heat
w = work
