Y8 extracting salt

Which of the following are the physical characteristics of salt crystal?

I They have similar size.

II They have fixed angle.

III They have fixed geometrical shapes.

IV They have flat surface, straight edges and sharp angles.

• I, II and III

• I, II and IV

• I, III and IV

• II, III and IV

Salt breaks down ice by lowering the ...

• boiling point

• melting/freezing point

• elasticity point

• fire point

What is the scientific name for salt?

• Sodium chloride

• Hydrochloric acid

• Acetic acid

• Potassium chloride

What are the sources of salt on Earth?

• Pure water

• several plants

• Mines

• Sea water

What physical phenomenon is used in salt marshes?

• Melting

• Evaporation

• Freezing

• Condensation

Is consuming salt essential for our health?

• YES

• NON

What is the maximum daily dose of salt recommended by WHO?

• 5 g

• 12 g

• 5000 mg

• 1 kg

What are the risks if you eat too much salt?

• Hypertension

• Stomach cancer

• Obesity

• All of the above

In one gram of salt, there is 400 mg of Sodium. If I consume 5 g of salt, how many milligrams of Sodium have I consumed?

• 4 g

• 2 g

• 200 mg

Which of the following foods contains the least salt?

• Pizza

• Potato crisps

• Bread

• Banana