Chemistry Atomic Structure & Bonding

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Questions and Answers

What determines the element of an atom?

  • The number of protons (correct)
  • The number of neutrons
  • The number of electrons
  • The number of protons and neutrons

Ionic bonds involve the sharing of electrons between atoms.

False (B)

What is the name for the 'sea' of electrons shared among many atoms in metallic bonds?

delocalized electrons

A substance with a pH less than 7 is considered ______.

<p>acidic</p> Signup and view all the answers

Match the following reaction types with their descriptions:

<p>Synthesis = Combining two or more substances into one product Decomposition = Breaking down one compound into simpler substances Single replacement = One element replaces another in a compound Double replacement = Ions exchange places in two compounds</p> Signup and view all the answers

Which state of matter has a fixed volume, but not a fixed shape?

<p>Liquid (A)</p> Signup and view all the answers

A supersaturated solution contains less solute than it has the capacity to dissolve at a given temperature.

<p>False (B)</p> Signup and view all the answers

What is the term for the minimum energy required for a chemical reaction to occur?

<p>activation energy</p> Signup and view all the answers

Substances that release hydroxide ions ($OH^-$) in water are called ______.

<p>bases</p> Signup and view all the answers

Which of these is NOT a factor affecting the rate of a chemical reaction?

<p>The color of the reaction container (C)</p> Signup and view all the answers

Flashcards

Atom

The smallest unit of matter, consisting of a nucleus and electrons.

Chemical Bond

An interaction that holds atoms together in a molecule.

Ionic Bond

A bond formed by the transfer of electrons from one atom to another.

Covalent Bond

A bond created by the sharing of electrons between atoms.

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Synthesis Reaction

A chemical reaction where two or more substances combine to form a single product.

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pH Scale

A scale that measures the acidity or basicity of a solution.

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Stoichiometry

The calculation of the quantities of reactants and products in a chemical reaction.

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Exothermic Reaction

A reaction that releases energy, usually in the form of heat.

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Nuclear Fission

A process where a heavy nucleus splits into smaller nuclei, releasing energy.

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Organic Chemistry

The study of carbon-containing compounds and their properties.

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Study Notes

Structure of atom

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