Atoms, Molecules, and Chemical Bonds

What is a molecule?

• A particle made up of 20 atoms

• A representation of an object

• A group of atoms connected by chemical bonds

• A complex particle made of two or more elements

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How are atoms joined together to form molecules?

• Through chemical bonds

• Through physical forces

• Through electromagnetic waves

• Through gravitational attraction

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What holds atoms together in a molecule?

• Chemical bonds

• Physical bonds

• Electromagnetic bonds

• Gravitational bonds

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What are models used for in chemistry?

• To visualize molecules

• To represent objects

• To depict atoms as spheres

• All of the above

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How do scientists portray molecules in models?

• By using different colors for different elements

• By using spheres to represent atoms

• By using sticks to represent chemical bonds

• All of the above

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What is the purpose of using models to represent molecules?

• To show the different atoms in a molecule

• To depict molecules in a visual way

• To quickly identify the shape of a molecule

• All of the above

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How do scientists often represent atoms and bonds in 2D drawings?

• Atoms are depicted with their atomic symbol and bonds are shown with lines

• Atoms are depicted as round balls and bonds are shown as narrow sticks

• Atoms are depicted with their atomic symbol and bonds are shown as narrow sticks

• Atoms are depicted as round balls and bonds are shown with lines

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What is the purpose of using different colors to represent different elements in models?

• To quickly identify the elements in a molecule

• To show the different shapes of atoms

• To represent the size of atoms

• To indicate the strength of bonds

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What does the composition of a molecule refer to?

• The types of elements that make it up

• The specific number or ratio of atoms of each kind of element that make it up

• Both the types of elements and the specific number or ratio of atoms

• The shape and size of the molecule

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How does the chemical structure of a molecule affect its characteristics?

• It determines the identity of the molecule

• It determines the color of the molecule

• It determines the size of the molecule

• It determines the shape of the molecule

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