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WorksheetsSavvas Chem 1.1-1.2 Exploring Energy and Its Transformations
Total questions: 20
Worksheet time: 20mins
What is energy defined as in the context of a system?
A qualitative property of a system
A quantitative property of a system
A measure of mass
A measure of volume
Which of the following best describes the first law of thermodynamics?
Energy can be created and destroyed
Energy cannot be created or destroyed, only transformed
Energy is always increasing in a system
Energy is always decreasing in a system
How does energy flow in a system?
From a lower energy state to a higher energy state
From a higher energy state to a lower energy state
Energy does not flow in a system
Energy flows randomly without any specific direction
Which of the following is an example of potential energy?
A moving car
A compressed spring
A flowing river
A burning candle
What is the main difference between temperature and heat?
Temperature is a measure of energy, while heat is a measure of mass
Temperature is a measure of the average kinetic energy of particles, while heat is the total energy transferred between substances
Temperature is a measure of volume, while heat is a measure of density
Temperature and heat are the same
Which of the following best describes kinetic energy?
Energy stored in chemical bonds
Energy due to an object's motion
Energy due to an object's position
Energy stored in a magnetic field
What happens to the total energy in a closed system according to the first law of thermodynamics?
It increases
It decreases
It remains constant
It fluctuates randomly
Which of the following is an example of energy transformation?
A battery powering a flashlight
A book resting on a table
A stationary car
A rock lying on the ground
How do electrical forces interact based on their charges?
Like charges attract, unlike charges repel
Like charges repel, unlike charges attract
All charges attract each other
All charges repel each other
Which of the following is an example of thermal energy?
Energy stored in a stretched rubber band
Energy from a hot stove
Energy from a moving car
Energy in a charged battery
What is the unit of energy in the International System of Units (SI)?
Joule (J)
Watt (W)
Newton (N)
Pascal (Pa)
Which of the following statements is true about energy flow in a system?
Energy can flow from one component to another within the same system
Energy cannot flow between different components of a system
Energy flow is always unidirectional
Energy flow is independent of the system's components
What type of energy is associated with the motion of particles in a substance?
Chemical energy
Kinetic energy
Potential energy
Nuclear energy
Which of the following best describes the concept of energy conservation?
Energy is always lost in a system
Energy is always gained in a system
Energy is neither created nor destroyed, only transformed
Energy is always constant in an open system
What is the relationship between heat and temperature in a substance?
Heat is the cause, and temperature is the effect
Temperature is the cause, and heat is the effect
Heat and temperature are unrelated
Heat and temperature are the same
CH3(CH2)10CH3 reacts with another substance to form carbon dioxide and water.
decomposition
combustion
methylation
polymerization
How does the energy of the products compare to the reactants in an exothermic reaction?
The energy of the products is less than the energy of the reactants with some energy given off as heat
The energy of the products is more than the energy of the reactants with energy absorbed from outside the system
The energy of the products is the same as the energy of the reactants with it all contained, no measurable temperature change
The energy of the products changes and the energy of the reactants stays the same and no temperature change.
What type of energy is defined as the kinetic energy of the atoms of a substance?
thermal energy
potential energy
chemical energy
mechanical energy
The temperature of a container of oxygen gas is increased from 149 K to 298 K. Which of the following statements is true?
The average kinetic energy of the oxygen molecules in the container decreases.
The average chemical potential energy of the oxygen molecules in the container increases.
The average kinetic energy of the oxygen molecules in the container increases.
The average chemical potential energy of the oxygen molecules in the container decreases.
A chemical is labeled as corrosive.
Which of the following first aid measures would be needed to prevent the danger from occurring?
Covering exposed skin with aprons and gloves
Wearing flip flops or sandals in lab
Running water over the skin for 15 minutes
Spreading sand on the lab tables and the floor
