Worksheets1st - unit 4 - lesson 1
Total questions: 12
Worksheet time: 36mins
The temperature of a body is the average kinetic energy of its constituent molecules
1. true
2. false
Heat always flows from a body at a lower temperature to a body at a higher temperature
1. true
2. false
……………….. energy gets transeferred from one object to another because of the temperature difference .
1. heat
2. solar
3. mechanical
4. electrical
When the objects in thermal contact atttain the same temprature , they are said to be in ………… .
1. mechanical equilibrium
2. electrical equilibrium
3. thermal equilibrium
4. balanced condition
emperature is a measure of the ……… of a body
1. warmth
2. height
3. volume
4. density
As the temperature of the body increases , the kinetic energy of its molecules also increases
1. true
2. false
Heat energy is measured in …………….. .
1. newton
2. calories
3. degree centigrade
4. none of the above
The amount of heat required to increase the temprature of mole of gas by 1 kelvin is known as ……. .
1. molecular specific heat
2. molar specific heat
3. internal energy
4.non of the above
In calorimetery, …….. .
1. only exothermic reaction can be measured
2. only endothermic reaction can be measured
3. reaction involving changes in heat or thermal energy can be measured
4. the heat of a compound can be measured
Which of these statement does not describe the converstion of energy in a chemical reaction ?
1. Energy is neither created nor destroyed during a chemical reaction.
2. The energy contained in the bonds of rectant molecules always equal the energy contained in the bonds of the product molecules.
3. If the energy of the system increase the energyof the surrounding decrease by the exact same amount
4. Energy can only be transferred from one form to another.
5. If the energy of a system decreases, then the energy of the surroundings increases by the exact same amount.
Which of the following is not a type of energy that a chemical reaction may produce? D
1. Light
2. Electric
3. Color
4. Heat
5. Chemical
The space in which a chemical reaction takes place is known as the system. What is the name of the space where heat energy is absorbed from or released into? B
1. Atmosphere
2. Background
3. Perimeter
4. Void
5. Surroundings
