List four reasons to support that water is a compound and not a mixture.
According to the law of constant proportions, which of the following statements is true for a compound like carbon dioxide (CO₂)?
Classify each of the following on the basis of their atomicity. (i) Cl₂ (ii) SO₂ (iii) N₂O₃ (iv) C₃H₈ (v) S₈ (vi) H₂O
You start with a container that holds exactly 4 grams of nitrogen gas (N₂). According to your lab manual, the reaction to form ammonia requires nitrogen and hydrogen to combine in a mass ratio of 14 : 3. Given this information, calculate the mass of hydrogen gas (H₂) you need to react completely with your 4 grams of nitrogen gas.
How many atoms are present in a (i) CO₂ molecule (ii) NH₄⁺ ion
Write down the names of compounds represented by the following formulae: (i) KNO₂ (ii) H₂S (iii) K₂SO₄ (iv) MgCl₂
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