WorksheetsQ3 Chemistry Review
Total questions: 10
Worksheet time: 11mins
In an exothermic reaction, heat is …
Absorbed
Given
Have you ever eaten sherbet sweets candy? They fizz in your mouth and your tongue feels cold. Why do you think that is?
It is an exothermic reaction
It is an endothermic reaction
It is made of ice
It is dissolving your mouth
What is an example of exothermic?
fireworks
icepack
coal
wood
Which of the following processes is exothermic?
Candle wax melting
Water evaporating
Liquid water freezing to form ice
Dry ice (solid carbon dioxide) subliming to form gaseous carbon dioxide
Combined gas law involves which three variables
Mass, Specific heat, Temperature
Temperature, Volume and pressure
Solid, liquid, gas
Speed, Motion,Particles
If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?
The pressure inside the can will decrease
The pressure inside the can will increase
The pressure inside the can will remain the same
Pressure has nothing to do with the outcome
Of these three states of matter, which one has the most kinetic energy?
Solid
liquid
gas
none of the above
If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________
One reaches a temperature of zero degrees celsius.
One runs out of energy
They both have equal temperatures
one reaches a temperature of 100 degrees celcius
The specific heat of platinum is 0.133 J/g°C. How much heat(q) is absorbed when a 10 g piece of platinum warms from 100°C to 150°C?
66.5 J
665 J
0.0266 J
0.665J
For the formula q = m c ∆T the units for Energy (q) is
g/J C
Joules
J/g
C/g
