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Questions and Answers

What is an ion?

A charged atom

What is the name given to an atom that has lost electrons?

Cation

What is the name given to an atom that has gained electrons?

Anion

Where on the periodic table do metals typically reside?

<p>Columns 1 &amp; 2 (A), Transition Metals (C), All of the above (D)</p> Signup and view all the answers

Hydrogen is a non-metallic cation

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

What happens to a sodium atom when it forms a cation?

<p>It loses one electron. (C)</p> Signup and view all the answers

What is the charge on a sodium ion?

<p>+1</p> Signup and view all the answers

In a sulfur atom, how many electrons are present?

<p>16 (A)</p> Signup and view all the answers

What is the name of the type of bond that forms when atoms share electrons?

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

What is the name of the type of bond that forms when atoms transfer electrons?

<p>Ionic bond</p> Signup and view all the answers

What are the names of the two ions that form when a sodium atom reacts with a chlorine atom?

<p>Sodium ion (Na+) and chloride ion (Cl-)</p> Signup and view all the answers

What is the name of the ionic compound formed when sodium and chlorine react?

<p>Sodium chloride</p> Signup and view all the answers

What is the symbol for sodium chloride?

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

What is the formula for the ionic compound formed when calcium and bromine react?

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

What is the name of the compound formed when calcium and bromine react?

<p>Calcium bromide</p> Signup and view all the answers

The overall number of protons and electrons in an ionic compound is equal.

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

Ionic compounds are normally found as a solid at room temperature.

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

Ionic compounds can easily conduct electricity in the solid state

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

What is an example of a physical change?

<p>Freezing water (B), Mixing salt and water (E)</p> Signup and view all the answers

What is an example of a chemical change?

<p>Baking a cake (A), Burning wood (B), Rusting metal (E)</p> Signup and view all the answers

Which of the following is NOT a characteristic of a chemical change?

<p>The change is always accompanied by a change in volume. (A)</p> Signup and view all the answers

Dissolving sugar in water is an example of a chemical change

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

Cooking an egg is an example of a chemical change

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

Burning wood is an example of a physical change

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

Rusting metal is an example of a physical change

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

What is the chemical name for rust?

<p>Iron Oxide (C)</p> Signup and view all the answers

Which of the following is NOT an example of a physical change?

<p>Burning a candle (B)</p> Signup and view all the answers

Which of the following is an example of a chemical change?

<p>Cooking a hamburger (E)</p> Signup and view all the answers

Flashcards

Ion

A charged atom or molecule.

Cation

A positively charged ion.

Anion

A negatively charged ion.

Ionic Bond

A chemical bond formed by the transfer of electrons between atoms.

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Covalent Bond

A chemical bond formed by the sharing of electrons between atoms.

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Sodium Ion (Na+)

A positively charged sodium atom that has lost one electron.

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Sulfide Ion (S2-)

A negatively charged sulfur atom that has gained two electrons.

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Chemical Reaction

A process that forms new substances by changing the chemical bonds between atoms.

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Ionic Compound

A compound composed of cations and anions held together by ionic bonds.

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Sodium Sulfide

An ionic compound formed from sodium ions and sulfide ions.

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Chemical Formula

A shorthand notation that shows the types and numbers of atoms in a substance.

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Physical Change

A change in a substance's appearance or form without changing its chemical composition.

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Chemical Change

A change in a substance's chemical composition resulting in new substances.

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Melting Point

The temperature at which a solid substance changes to a liquid.

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Boiling Point

The temperature at which a liquid substance changes to a gas.

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3D Lattice

Regular arrangement of ions in an ionic compound.

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Valence Electrons

Electrons in the outermost energy level of an atom.

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Periodic Table

Table that organizes chemical elements by their properties

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Calcium Bromide

Compound formed from calcium and bromine.

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