HALLA_BØL

What is the reactivity series of metals and how does it rank them?

• Gold, Silver, Copper, Iron, Lead, Tin, Zinc, Aluminum, Magnesium, Calcium, Sodium, Potassium

• Calcium, Magnesium, Aluminum, Iron, Copper, Silver, Gold, Tin, Lead, Zinc, Potassium, Sodium

• Iron, Copper, Silver, Gold, Tin, Lead, Zinc, Aluminum, Magnesium, Calcium, Sodium, Potassium

• The reactivity series of metals ranks them from most reactive to least reactive, typically including: Potassium, Sodium, Calcium, Magnesium, Aluminum, Carbon, Zinc, Iron, Tin, Lead, Copper, Silver, Gold.

Which metal is the most reactive according to the reactivity series?

• Sodium

• Potassium

• Calcium

• Magnesium

Explain the general characteristics of non-metals.

• Non-metals cannot gain electrons and are only found as gases.

• Non-metals are poor conductors, have high electronegativities, can be gases, liquids, or solids, and tend to gain electrons.

• Non-metals are excellent conductors of electricity.

• Non-metals have low electronegativities and always exist as solids.

How do non-metals differ from metals in terms of physical properties?

• Non-metals are always solid at room temperature.

• Non-metals are more malleable than metals.

• Non-metals are excellent conductors of electricity.

• Non-metals differ from metals in being poor conductors, more brittle, and having varied states at room temperature.

What are metallic oxides and how do they behave in water?

• Metallic oxides are compounds formed by metals and oxygen; they can be soluble or insoluble in water, affecting their reactivity.

• Metallic oxides are only found in liquid form.

• All metallic oxides dissolve completely in water.

• Metallic oxides are formed by non-metals and oxygen.

Describe the properties of non-metallic oxides.

• Non-metallic oxides are ionic compounds with high melting points.

• Non-metallic oxides are always solid and conductive.

• Non-metallic oxides are basic and form strong alkaline solutions.

• Non-metallic oxides are covalent compounds, often gaseous, acidic or neutral, non-conductive, and have lower melting and boiling points.

What is an alloy and how is it different from a pure metal?

• An alloy is a mixture of metals or a metal with other elements, while a pure metal consists of only one type of metal.

• A pure metal is a mixture of different metals.

• An alloy is a single type of metal with no other elements.

• Alloys are always stronger than pure metals.

List three common alloys and their applications.

• Copper - roofing and electrical applications

• Aluminum - electrical wiring

• 1. Steel - construction and manufacturing; 2. Brass - musical instruments and plumbing; 3. Bronze - sculptures and marine applications.

• Nickel - batteries and coins

How does the conductivity of metals compare to that of non-metals?

• Metals are poor conductors of electricity, while non-metals are good conductors.

• Metals are good conductors of electricity, while non-metals are poor conductors.

• Non-metals are better conductors than metals.

• Both metals and non-metals have the same level of conductivity.

What factors affect the conductivity of metals?

• Temperature, impurities, crystal structure, and defects.

• Color of the metal

• Humidity levels

• Magnetic fields