Here's the matching of types of matter to the correct descriptions:
Descriptions and their Matches:
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can be represented using chemical symbols
- Match: elements, atoms (since each atom has a corresponding symbol)
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can have subscripts in their chemical formulas
- Match: molecules, compounds (subscripts indicate the number of atoms in a molecule or compound)
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are represented on the periodic table
- Match: elements (elements are listed on the periodic table)
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are always made of two or more atoms
- Match: molecules, compounds (both consist of two or more atoms; compounds specifically consist of two or more different elements)
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describe helium (He) gas particles
- Match: atoms, elements (helium is an element and exists as single atoms, or He gas, which are individual helium atoms)
Summary:
- Atoms: can be represented using chemical symbols, describe helium (He) gas particles
- Elements: can be represented using chemical symbols, are represented on the periodic table, describe helium (He) gas particles
- Molecules: can have subscripts in their chemical formulas, are always made of two or more atoms
- Compounds: can have subscripts in their chemical formulas, are always made of two or more atoms
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