Conservation of Atoms and Mass in Reactions (Grade 10 NSC Matric Physical Sciences): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What happens to atoms during a chemical reaction?
What happens to atoms during a chemical reaction?
They rearrange to form new compounds
What does the law of conservation of mass state?
What does the law of conservation of mass state?
Total mass is conserved during reaction
Which statement about conservation in reactions is correct?
Which statement about conservation in reactions is correct?
Atoms are conserved, molecules are not
In a closed system, how does the total mass after a reaction compare to the mass before?
In a closed system, how does the total mass after a reaction compare to the mass before?
They are equal
Why must chemical equations be balanced?
Why must chemical equations be balanced?
Because atoms are conserved in reactions
What can happen in open systems that appears to violate conservation?
What can happen in open systems that appears to violate conservation?
Products like gases might escape
What remains the same before and after a chemical reaction?
What remains the same before and after a chemical reaction?
Total number of each type of atom
Why is mass conserved during chemical reactions?
Why is mass conserved during chemical reactions?
Atoms are neither created nor destroyed
Which mathematical relationship expresses mass conservation?
Which mathematical relationship expresses mass conservation?
In a balanced chemical equation, what must be equal on both sides?
In a balanced chemical equation, what must be equal on both sides?
Number of each type of atom