Energy Changes in Chemical Reactions (Grade 11 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is true about breaking chemical bonds?
What is true about breaking chemical bonds?
It always requires energy
What happens when new chemical bonds form?
What happens when new chemical bonds form?
Energy is always released
What is an exothermic reaction?
What is an exothermic reaction?
A reaction that releases energy
What is an endothermic reaction?
What is an endothermic reaction?
A reaction that absorbs energy
What is the sign of for exothermic reactions?
What is the sign of for exothermic reactions?
Negative
What is the sign of for endothermic reactions?
What is the sign of for endothermic reactions?
Positive
What happens to the surroundings during an exothermic reaction?
What happens to the surroundings during an exothermic reaction?
They become warmer
What happens to the surroundings during an endothermic reaction?
What happens to the surroundings during an endothermic reaction?
They become cooler
Which is an example of an exothermic reaction?
Which is an example of an exothermic reaction?
Combustion of fuels
Which is an example of an endothermic reaction?
Which is an example of an endothermic reaction?
Photosynthesis