metals

Question 1

Flashcard 1:
Q: What is a metal?

Answer 1

A: Metals are elements that are typically hard, shiny, malleable, ductile, and good conductors of heat and electricity.

Question 2

Flashcard 2:
Q: What is an alloy?

Answer 2

A: An alloy is a mixture of two or more elements, where at least one is a metal, designed to enhance properties such as strength or resistance to corrosion.

Question 3

Flashcard 3:
Q: What is the general reactivity trend of metals in the periodic table?

Answer 3

A: Metals become more reactive as you move down a group and less reactive as you move across a period from left to right.

Question 4

Flashcard 4:
Q: What are the most reactive metals called?

Answer 4

A: The most reactive metals are known as alkali metals, located in Group 1 of the periodic table.

Question 5

Flashcard 5:
Q: How do alkali metals react with water?

Answer 5

A: Alkali metals react vigorously with water, producing hydrogen gas and a metal hydroxide.

Question 6

Flashcard 6:
Q: What is the reaction of potassium with water?

Answer 6

A: Potassium reacts very quickly with water, producing potassium hydroxide and hydrogen gas, often resulting in a flame.

Question 7

Flashcard 7:
Q: What is the method used to extract highly reactive metals like aluminum from their ores?

Answer 7

A: Electrolysis is used to extract highly reactive metals like aluminum.

Question 8

Flashcard 8:
Q: What is the main ore from which aluminum is extracted?

Answer 8

A: Bauxite is the main ore from which aluminum is extracted.

Question 9

Flashcard 9:
Q: What is rusting?

Answer 9

A: Rusting is the slow oxidation of iron in the presence of water and oxygen, forming iron oxide (rust).

Question 10

Flashcard 10:
Q: How can rusting be prevented?

Answer 10

A: Rusting can be prevented by painting, galvanizing (coating with zinc), or applying oil/grease to iron surfaces.

Question 11

Flashcard 11:
Q: What is the reactivity series of metals?

Answer 11

A: The reactivity series is a list of metals arranged in order of their reactivity from most reactive (e.g., potassium) to least reactive (e.g., gold).

Question 12

Flashcard 12:
Q: What is the process of galvanization?

Answer 12

A: Galvanization is the process of coating iron or steel with a layer of zinc to prevent rusting.

Question 13

Flashcard 13:
Q: Which metals are extracted using carbon reduction?

Answer 13

A: Metals such as iron, zinc, and lead, which are less reactive than carbon, can be extracted from their ores using carbon reduction.

Question 14

Flashcard 14:
Q: What is an example of a metal that does not corrode easily?

Answer 14

A: Gold and platinum do not corrode easily due to their low reactivity with oxygen and water.

Question 15

Flashcard 15:
Q: Why is aluminum resistant to corrosion despite being reactive?

Answer 15

A: Aluminum forms a protective layer of aluminum oxide on its surface, which prevents further reaction with air or water.

Question 16

Flashcard 16:
Q: What is the significance of transition metals in the periodic table?

Answer 16

A: Transition metals, found in the center of the periodic table, have high melting points, are good conductors of heat and electricity, and often form colored compounds.

Question 17

Flashcard 17:
Q: What are the properties of metals?

Answer 17

A: Metals are typically malleable, ductile, conductive, and lustrous, and they have high melting and boiling points.

Question 18

Flashcard 18:
Q: What happens when metals react with acids?

Answer 18

A: Metals react with acids to produce a salt and hydrogen gas.

Question 19

Flashcard 19:
Q: How does iron react with hydrochloric acid?

Answer 19

A: Iron reacts with hydrochloric acid to produce iron chloride and hydrogen gas.

Question 20

Flashcard 20:
Q: Why are alloys like stainless steel important?

Answer 20

A: Alloys like stainless steel are important because they resist corrosion and are stronger than pure metals.