Metals and Non-metals practice exercise 3

Carbon has an electron arrangement of 2.4, while Aluminium has 2.8.3. Using electron arrangements, explain why Carbon is a non-metal and Aluminium is a metal. (2 marks)

Two elements have the following electron arrangements: 2.8.2 and 2.7. For each element:a) State its name. (1 mark)b) State whether it is a metal or a non-metal, giving a reason.  (2 marks)

Two elements have the following electron arrangements: 2.8.2 and 2.7. For each element:a) State its name. (1 mark)b) State whether it is a metal or a non-metal, giving a reason.  (2 marks)

The diagram below shows the electron arrangement of sodium. Is sodium a metal or a non-metal? Explain your answer using its outer shell. (2 marks)

The diagram below shows the electron arrangement of sodium. Is sodium a metal or a non-metal? Explain your answer using its outer shell. (2 marks)

A farmer leaves a jembe in the sun. After some time, the metal part of the jembe becomes very hot. Explain why this happens and state whether the jembe head is made of a metal or a non-metal. (2 marks)

A farmer leaves a jembe in the sun. After some time, the metal part of the jembe becomes very hot. Explain why this happens and state whether the jembe head is made of a metal or a non-metal. (2 marks)

Potassium has an electron arrangement of 2.8.8.1, while Magnesium has 2.8.2. Which one is more reactive as a metal? Explain. (2 marks)

Sodium (2.8.1) and Magnesium (2.8.2) are both metals. When placed in water, sodium reacts more violently than magnesium. Explain why this happens using electron arrangement. (2 marks)

The diagram below shows the electron configuration of calcium and neon. Classify each as a metal or non-metal and explain your reasoning. (2 marks)  

The diagram below shows the electron configuration of calcium and neon. Classify each as a metal or non-metal and explain your reasoning. (2 marks)  

The diagram below shows the electron configuration of calcium and neon. Classify each as a metal or non-metal and explain your reasoning. (2 marks)  

The electron arrangement of Oxygen is 2.6 and the electron arrangement of Flourine is 2.7. Why is Fluorine highly reactive compared to Oxygen, even though both are non-metals? (2 marks)    

Based on the diagram below, the electron arrangement for oxygen is 2.6, while the electron arrangement for fluorine is 2.7. Why is Fluorine highly reactive compared to Oxygen, even though both are non-metals? (2 marks)    

Based on the diagram below, the electron arrangement for oxygen is 2.6, while the electron arrangement for fluorine is 2.7. Why is Fluorine highly reactive compared to Oxygen, even though both are non-metals? (2 marks)    

The electron arrangement of oxygen is 2.6 as shown below. Is oxygen a metal or a non-metal? Explain. (2 marks)

The electron arrangement of oxygen is 2.6 as shown below. Is oxygen a metal or a non-metal? Explain. (2 marks)

In Kenyan homes, sufurias are used for cooking ugali. Why are sufurias made of aluminium and not wood? (1 mark)

In Kenyan homes, sufurias are used for cooking ugali. Why are sufurias made of aluminium and not wood? (2 marks)