Atoms, Periodic Table and Bonding Review

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What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. For example, salt (NaCl) is a compound made of sodium and chlorine.

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What is a mixture?

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A mixture is a combination of two or more substances that are not chemically bonded. For example, Kool-Aid is a mixture of water, sugar, and flavoring.

Front

What type of bond is formed when atoms share electrons?

Back

Covalent bonds are formed when atoms share electrons.

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What type of bond is formed when one atom transfers electrons to another?

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Ionic bonds are formed when one atom transfers electrons to another, resulting in positive and negative ions.

Front

What attracts positive and negative ions in ionic bonding?

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In ionic bonding, positive and negative ions attract each other due to their opposite charges.

Front

What is the periodic table?

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The periodic table is a chart that organizes all known elements based on their atomic number, electron configuration, and recurring chemical properties.

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What is an element?

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An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen (H) and oxygen (O).

Front

What is the difference between an element and a compound?

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An element is a single type of atom, while a compound consists of two or more different types of atoms chemically bonded together.

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What are metallic bonds?

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Metallic bonds are formed when metal atoms share their pooled electrons, allowing them to conduct electricity and heat.

Front

What is the significance of the atomic number in the periodic table?

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The atomic number represents the number of protons in an atom's nucleus and determines the element's identity.