S3 Chemistry- Writing Chemical Formula

Is carbon dioxide (shown in the picture) an element, compound or mixture?

• Element

• Compound

• Mixture

Is bromine (shown in picture) an element, compound or mixture?

• Element

• Compound

• Mixture

What is the formula of the molecule shown in the picture?

• H₁H₁

• H

• H₂

• H-H

Which molecule has the molecular formula C₃H₆?

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What is the molecular formula of the molecule shown in the diagram?

• Cl₅P₁

• P₁Cl₅

• PCl₅

• Cl₅P

What is the molecular formula of cinnamaldehyde?

• C₁₁H₈O

• C₉H₈O

• C₆H₅C₃H₃O

• C₉H₁₀O

What is the molecular formula of phosphorus trichloride?

• PCl₃

• P₁Cl₃

• P₃Cl

• P₃Cl₁

What is the molecular formula of dinitrogen tetroxide?

• N₂O

• N₄O₂

• N₂O₃

• N₂O₄

What is the molecular formula of tri-iron tetroxide?

• Fe₃O₃

• FeO₄

• Fe₃O₄

• Fe₄O₃

What are the elements in magnesium oxide?

• magnesium and hydrogen
• magnesium and carbon
• magnesium and nitrogen
• magnesium and oxygen