Question 1: Metals are elements that are usually good conductors of heat and electricity, malleable, and ductile. Non-metals tend to be poor conductors and are often brittle in solid form. Both types of elements are arranged on the periodic table based on their atomic number and properties.

Answer: Metals are good conductors, malleable, ductile; non-metals are poor conductors, brittle. They are arranged on the periodic table based on atomic number and properties.

Question 1: List three physical properties that distinguish metals from non-metals.

Answer: Metals are malleable, ductile, and good conductors of heat and electricity; non-metals are brittle, poor conductors, and not malleable.

Question 2: Which element is a metal: Oxygen, Aluminum, Sulfur, or Chlorine?

Answer: Aluminum

Question 1: Where are metals primarily located on the periodic table? Describe their general position.

Answer: Metals are mainly located on the left side and in the center of the periodic table, including groups 1-12 and some in groups 13-16.

Question 2: Identify the group number where non-metals are most commonly found.

Answer: Non-metals are most commonly found in groups 14-18, especially group 17 (halogens) and group 18 (noble gases).

Question 1: Explain why metals tend to lose electrons during chemical reactions.

Answer: Metals have few electrons in their outermost shell and tend to lose them to achieve a stable electron configuration, forming positive ions.

Question 2: Describe the typical reaction of non-metals with metals in forming compounds.

Answer: Non-metals tend to gain electrons from metals during reactions, forming negative ions and resulting in ionic compounds.

Question 1: Propose a simple experiment to test whether a substance is a metal or non-metal. List the variables and safety precautions involved.

Answer: To test if a substance is a metal, conduct a conductivity test by connecting it to a circuit with a light bulb. Variables include the type of substance and temperature; safety precautions include wearing gloves and eye protection to handle potentially reactive materials.

Question 2: Identify an industry where metals are crucial and explain why.

Answer: The construction industry relies heavily on metals like steel and aluminum because of their strength, durability, and malleability.

Question 1: A sample contains a mixture of elements. It conducts electricity and is malleable. Is it more likely to be a metal or non-metal? Justify your answer.

Answer: It is more likely a metal because it conducts electricity and is malleable, which are typical properties of metals.

Question 2: Explain how understanding the properties of metals and non-metals can help in recycling electronic waste.

Answer: Knowing the properties of metals and non-metals allows for efficient separation and recycling. Metals like copper and aluminum can be recovered for reuse, reducing waste and conserving resources. Non-metals like plastics can be identified for proper disposal or recycling.