Chemistry Day 2&3

Front

What is the definition of a compound molecule?

Back

A compound molecule is a chemical species that consists of two or more different elements bonded together in a fixed ratio.

Tags

NGSS.MS-PS1-1

Front

Is O₂ a compound molecule?

Back

No, O₂ is a diatomic molecule consisting of two oxygen atoms; it is an elemental molecule, not a compound.

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NGSS.MS-PS1-1

Front

What is the molecular formula for 4CF₂Cl₂?

Back

The molecular formula indicates that there are 4 carbon (C) atoms, 8 fluorine (F) atoms, and 8 chlorine (Cl) atoms.

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NGSS.MS-PS1-1

Front

How do you determine the number of atoms in a molecular formula?

Back

Count the number of each type of atom represented in the formula, considering any coefficients that indicate multiples.

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NGSS.MS-PS1-1

Front

What does the formula C₃H₅(NO₃)₃ represent?

Back

It represents a compound with 3 carbon (C) atoms, 5 hydrogen (H) atoms, 3 nitrogen (N) atoms, and 9 oxygen (O) atoms.

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NGSS.MS-PS1-1

Front

What is the difference between an elemental molecule and a compound?

Back

An elemental molecule consists of only one type of element, while a compound consists of two or more different elements.

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Front

Are all molecules that contain more than one type of atom considered compounds?

Back

Yes, molecules that contain more than one type of atom are considered compounds, provided they are bonded together.

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Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts indicate the number of atoms of each element in a molecule.

Front

What does the term 'molecular formula' refer to?

Back

A molecular formula shows the number and types of atoms in a molecule, without indicating the arrangement of atoms.

Tags

NGSS.MS-PS1-1

Front

Can a molecule be both an element and a compound?

Back

No, a molecule can either be an element (composed of one type of atom) or a compound (composed of different types of atoms), but not both.

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