Common-Core/ Grade 8
Science MCQ Based On How are substances represented by models and chemical formulas
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Common-Core Grade 8 - 8 How are substances represented by models and chemical formulas
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Arrangement of atoms.
A molecule has atoms of different elements.
Composition of a substance defines its arrangement, ratio, and type of atoms.
Check number of elements and atoms.
Different types of models used to represent compounds.
Look at the number of atoms.
Molecule is made up of atoms of different elements.
Arrangement of various elements.
The model represents the arrangement of the compound. The chemical formula tells the composition of the compound.
The model represents the composition of the substance,H2S.
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