Energy Changes and Chemical Reactions

What type of reaction requires more energy to break bonds and continue the chemical process?

• Exothermic reaction

• Endothermic reaction

• Nuclear reaction

• Neutralization reaction

In the process of cellular respiration, what is released when glucose breaks down?

• Carbon dioxide only

• Water vapor only

• ATP energy

• Light energy

According to the law of conservation of energy:

• Energy can be created but not destroyed

• Energy can be destroyed but not created

• Energy can be both created and destroyed

• Energy can neither be created nor destroyed

Which statement about photosynthesis is correct?

• It releases energy during the process

• It's an exothermic reaction

• It requires light energy from the sun

• It produces ATP directly from sunlight

In chemical reactions, what happens when concentration increases?

• The reaction always stops

• Temperature decreases

• The number of collisions increases

• Bond strength weakens

Chemical potential energy depends on:

• The strength of chemical bonds

• The temperature only

• The volume of substances

• The color of substances

What is produced in an exothermic reaction?

• Light only

• Products and water

• Reactants and energy

• Products and thermal energy

All matter is constantly in:

• A solid state

• Motion

• A liquid state

• A gaseous state

In photosynthesis, what substances are broken down using light energy?

• Glucose and oxygen

• ATP and water

• CO₂ and water

• Oxygen and nitrogen

More energy results in:

• Fewer molecular collisions

• Slower particle movement

• More molecular collisions

• No change in motion