Answer:
Imma just say acids have more acidity and bases have lower acidity...
SAMPLE A - <span>pure substance.
</span>SAMPLE B - <span>homogeneous mixture.
</span>SAMPLE C - <span>heterogeneous mixture.
</span>Pure substance - <span>constant composition and properties.</span>
Homogeneous mixture - same uniform appearance and composition.
Heterogeneous mixture - <span>not </span>uniform<span> in composition, two phases (liquid and dust).
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This is a black screen. there’s no picture.
<span>Haemoglobin is a pure substance because it contains only one type of atom. </span>
