Is carbon dioxide a pure substance

Yes, carbon dioxide is a pure substance not a mixture. First consider the properties of a pure substance: •made of only one type of atom or molecule

Explanation:

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Explanation:

A pure substance needs only be made up of only one kind of molecule or it could be an ionic or metallic solid made up only of the atoms in the empirical formula, not necessarily one kind of atom. It is possible to have pure carbon dioxide, pure water, pure oxygen gas pure NaCl solid and pure solid iron, in theory only. It’s literally impossible to ensure that every single atom or molecule of ‘something else’ is removed from anything.

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fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

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away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.