Differentiating Compounds and Molecules

This video tutorial explains the concepts of compounds and molecules, highlighting that all compounds are molecules, but not all molecules are compounds. It covers the structure of atoms, the formation of molecules, and the distinction between molecules and compounds. The video also provides examples of atoms, molecules, and compounds, and teaches how to count atoms in chemical formulas using subscripts and brackets.

What is the smallest particle of an element?

• Neutron

• Atom

• Compound

• Molecule

Which of the following is a molecule made of two atoms of the same element?

• NaCl

• O2

• CO2

• H2O

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NGSS.MS-PS1-1

What defines a compound?

• A single element

• Multiple atoms of one element

• Atoms of different elements combined

• Isolated neutrons

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NGSS.MS-PS1-1

Which example is a compound?

• Ne

• O2

• H2O

• He

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NGSS.MS-PS1-1

What is not a compound?

• CH4

• H2O

• CO2

• O2

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NGSS.MS-PS1-1

How many atoms are in a molecule of CO2?

• 2

• 3

• 4

• 1

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NGSS.MS-PS1-1

What does the subscript in a chemical formula indicate?

• Number of atoms of the element

• Number of compounds

• Number of protons

• Number of molecules

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NGSS.MS-PS1-1

How many total atoms are in H2O?

• 1

• 2

• 3

• 4

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NGSS.MS-PS1-1

What does the number outside the brackets in a chemical formula signify?

• Total number of elements

• Multiplication factor for the group inside the brackets

• Number of compounds

• Number of molecules

How many atoms are in magnesium phosphate Mg3(PO4)2?

• 13

• 11

• 10

• 8

Tags

NGSS.MS-PS1-1