Chemistry Fundamentals

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Questions and Answers

What is the study of matter and its properties called?

  • Biology
  • Chemistry (correct)
  • Physics
  • Geology

An element can be broken down into simpler substances by chemical means.

False (B)

What is the smallest unit of an element that retains its chemical properties?

atom

A substance consisting of two or more different elements chemically bonded together is called a(n) ______.

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

What type of bond involves the sharing of electrons between atoms?

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

Reactants are the substances formed as a result of a chemical reaction.

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

What is the term for the quantitative relationship between reactants and products in a chemical reaction?

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

The reactant that is completely consumed in a chemical reaction is called the ______ reactant.

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

Which state of matter has a definite volume but takes the shape of its container?

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

Match the following terms with their definitions:

<p>Acid = Substance that donates protons (H+) Base = Substance that accepts protons (H+) pH = Measure of acidity or basicity</p> Signup and view all the answers

Flashcards

What is matter?

Anything with mass that occupies space, existing as a solid, liquid, gas, or plasma.

What is an element?

A substance that cannot be broken down into simpler substances through chemical means.

What are ionic bonds?

When atoms transfer electrons, creating electrostatic attraction.

What are reactants?

The starting materials in a chemical transformation.

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What are products?

The substances that are produced from a chemical reaction.

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What is a solution?

A homogeneous mixture of two or more substances.

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What is concentration?

Amount of solute in solvent/solution.

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What is pH?

A measure of acidity or basicity.

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What are isomers?

Molecules with the same molecular formula but different structures.

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What is an exothermic reaction?

Releases heat; ΔH < 0.

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