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Chemistry Basics Quiz

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Questions and Answers

Which subatomic particle is positively charged and located in the nucleus of an atom?

Valence electron

Neutron

Electron

Proton (correct)

What does the pH scale measure in solutions?

Concentration of protons (correct)

Volume of solutions

Density of compounds

Energy of reactions

In the chemical reaction CO₂ + H₂O → H₂CO₃, what is the role of the arrow?

Shows the type of product formed

Represents the activation energy required

Indicates the location of reactants

Signifies the transformation or yield (correct)

Which of the following best defines an enzyme?

<p>A catalyst that speeds up chemical reactions</p> Signup and view all the answers

Which statement accurately describes valence electrons?

<p>They are involved in chemical bonding and reactions.</p> Signup and view all the answers

Chemistry Basics Quiz

Choose a study mode

Podcast

Questions and Answers

Which subatomic particle is positively charged and located in the nucleus of an atom?

What does the pH scale measure in solutions?

In the chemical reaction CO₂ + H₂O → H₂CO₃, what is the role of the arrow?

Which of the following best defines an enzyme?

Which statement accurately describes valence electrons?

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Structure de l'atome et particules subatomiques

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