Remidial grade 10

When anhydrous copper(II) sulfate is added to water, what type of reaction occurs and what is the temperature change?

• Endothermic, temperature decreases

• Exothermic, temperature decreases

• Endothermic, temperature increases

• Exothermic, temperature increases

Tags

Understanding

Describe the energy change when a substance is burned.

• Endothermic

• Neutralisation

• Exothermic

• Reduction

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Understanding

Which isotope is a radioactive isotope?

• Carbon-12

• Uranium-238

• Oxygen-16

• Hydrogen-1

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Remembering

What is the relative molecular mass (Mr) of nitrogen dioxide (NO2)?

• 46

• 30

• 23

• 15

Tags

Applying

Explain the process of electrolysis and its applications in industry.

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Understanding

Discuss the environmental impact of releasing NO2 into the atmosphere.

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Applying

What are the features of a chemical equilibrium?

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Understanding

Define electrolysis

Answer explanation

the breakdown (into elements)

of an (ionic) compound by (the

passage of) electricity

Nitric Acid + Calcium Carbonate forming gas bubbles. What is the name of the salt produced