Give one word or term for each of the following descriptions.
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A composition of two or more atoms that act as a unit.
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Chemical formula that gives the relative number of atoms of each element that are in a molecule.
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Give one word or term for each of the following descriptions.
A composition of two or more atoms that act as a unit.
Chemical formula that gives the relative number of atoms of each element that are in a molecule.
Give a definition for each of the following terms:
molecule
ionic compound
covalent network structure
empirical formula
ball-and-stick model
Ammonia, an ingredient in household cleaners, is made up of one part nitrogen (\(\text{N}\)) and three parts hydrogen (\(\text{H}\)). Answer the following questions:
is ammonia a covalent, ionic or metallic substance?
write down the molecular formula for ammonia
draw a ball-and-stick diagram
draw a space-filling diagram
In each of the following, say whether the chemical substance is made up of covalent, molecular structures, covalent network structures, ionic network structures or metallic structures:
ammonia gas (\(\text{NH}_{3}\))
zinc metal (\(\text{Zn}\))
graphite (\(\text{C}\))
nitric acid (\(\text{HNO}_{3}\))
potassium bromide (\(\text{KBr}\))
Refer to the diagram below and then answer the questions that follow:
Identify the molecule.
Write the molecular formula for the molecule.
Is the molecule a covalent, ionic or metallic substance? Explain.
Represent each of the following molecules using its chemical formula, structural formula and the ball-and-stick model.
nitrogen
carbon dioxide
methane
argon
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