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Introduction to Chemical Formulas

Last updated about 6 years ago

13 Nsɛmmisa

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Introduction to chemical formulas and counting atoms. Video and practice questions.

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1.

A group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a compound

Dot diagram

Structural formula

Chemical formula

Chemical equation

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2.

Define a subscript

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3.

Define a coefficient

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4.

Describe the mathmatical process that takes place with the coefficient and the subscript.

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5.

On the following whiteboard, use your editing tools to create models of the compounds.
Yellow = Hydrogen (H) Blue = Carbon (C) Green = Nitrogen (N) Red = Oxygen (O)

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6.

How many carbon atoms in NaHCO₃

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7.

How many Oxygen atoms in NaHCO₃

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8.

How many Nitrogen atoms in Cu(NO₃)₂

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9.

How many Oxygen atoms in Cu(NO₃)₂

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10.

How many total atoms in 3CuSO₄

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11.

How many Copper atoms in 3CuSO₄

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12.

How many differen elements are there in 4AgNO₃

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13.

How many Hydrogen atoms in 3Pb(OH)₂