Energy in Chemical Reactions Quiz

What is an exothermic reaction?

• A chemical reaction that releases energy in the form of light or heat

• A chemical change that does not involve the release of heat

• A reaction that releases energy in the form of heat only

• A process that absorbs heat from its surroundings

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Define endothermic reaction.

• a chemical reaction in which the system releases thermal energy into its surroundings resulting in the overall decrease in its total internal energy

• a chemical change in which the reactants and products have the same amount of energy from the beginning to the end of the reactions.

• a chemical change in which the system absorbs thermal energy from its surroundings resulting in the overall increase in its total internal energy level

• a chemical reaction in which the system releases thermal energy from its products resulting in the overall decrease in its total internal energy level

Tags

NGSS.HS-PS1-4

What is activation energy in a chemical reaction?

• The energy required to stop a chemical reaction

• Minimum energy required for a chemical reaction to occur

• The energy released during a chemical reaction

• The maximum energy required for a chemical reaction to occur

How does time affect the energy in a chemical reaction?

• Causes the reaction to stop completely

• Has no effect on the reaction rate

• Decrease the reaction rate

• Increase the reaction rate

Explain the relationship between temperature and energy in chemical reactions.

• Temperature decreases the energy of molecules, leading to faster reaction rates.

• Temperature has no effect on the energy of molecules in chemical reactions.

• Temperature causes molecules to lose energy, slowing down reaction rates.

• Temperature increases the energy of molecules, leading to faster reaction rates.

Tags

NGSS.HS-PS1-5

Where does the energy come from in a chemical reaction?

• From the movement of atoms

• From the surrounding heat of the air

• From the breaking and forming of chemical bonds

• From the color of the substances

Tags

NGSS.HS-PS1-4

Where does the energy go in a chemical reaction?

• Energy is destroyed

• Energy is created

• Energy is either released or absorbed

• Energy disappears

Tags

NGSS.HS-PS1-4

What are the characteristics of an exothermic reaction?

• No change in temperature

• Release of heat and/ or light

• Absorption of heat

• Release of light

Tags

NGSS.HS-PS1-4

What are the characteristics of an endothermic reaction?

• Absorbs heat from the surroundings

• Causes a decrease in temperature

• Emits heat to the surroundings

• Does not involve any heat exchange

Tags

NGSS.HS-PS1-4

How does the energy change in a chemical reaction?

• The energy can change in the form of heat, light, or sound.

• The energy is only released in the form of heat and light but not sound

• The energy in the reaction remains constant throughout the reaction

• The energy can only released in the form of heat

Tags

NGSS.HS-PS1-4