Year 11 quiz 1

Why do ionic compounds have a high melting point?

• Weak forces of attraction between molecules

• Strong forces of attraction between atoms

• Strong forces of attraction between ions

• Strong intermolecular forces

Why can graphite conduct electricity? choose the best answer

• Freely moving charges

• Freely moving ions

• Freely moving atoms

• Freely moving electrons

Which of these is not a product of anaerobic respiration?

• water

• Ethanol

• Carbon dioxide

• Lactic acid

Which of these is the best example of Newton’s third law in action?

• A body accelerating when a resultant force is acting on it

• Earth's gravity attracting a hot air balloon and the hot air balloon’s gravity attracting the Earth

• A body travelling in a straight line until a resultant force acts on it

• Earth pulls a book down and the table pushes the book up

A resultant force of 54,000 N acts on a train of mass 18,000 kg. What is the acceleration of the train?

• 3.0 m/s²

• 72,000 m/s²

• 0.3 m/s²

Which organ system is involved in providing the bloodstream with glucose?

• Digestive system

• Circulatory system

• Gaseous exchange system

What is active transport?

• The net movement of molecules from a high concentration to a low concentration

• The net movement of water molecules from a high concentration to a low concentration across a partially permeable membrane

• The net movement of molecules from a low concentration to a high concentration, using energy