Question

matching: elements in the earths crust
directions: fill in the blank with the letter of the clue that matches
the word.

word\t\tclue
_____ oxygen\ta. a mineral found in marble and limestone
_____ iron\tb. found in all potash minerals
_____ mineral\tc. the most abundant element in the earths crust.
_____ sodium\td. the thinnest layer of the earth
_____ aluminum\te. make up the majority of earths crust
_____ silicates\tf. the lightest structural metal known
_____ silicon\tg. a magnetic element
_____ potassium\th. a second major group of minerals
_____ magnesium\ti. naturally occurring inorganic crystalline solids
_____ non - silicates\tj. the most abundant metal in the crust
_____ calcium\tk. the 2nd most abundant element in
the earths crust
_____ crust\tl. a highly reactive element never found by itself

Explanation:

To solve the matching, we use knowledge of Earth's crust elements and minerals:

• Oxygen: Most abundant element in Earth’s crust (Clue C).
• Iron: Magnetic element (Clue G).
• Mineral: Defined as naturally occurring inorganic crystalline solids (Clue I).
• Sodium: Highly reactive, never found alone (Clue L).
• Aluminum: Most abundant metal in crust (Clue J).
• Silicates: Majority of Earth’s crust (Clue E).
• Silicon: 2nd most abundant element (Clue K).
• Potassium: Found in all potash minerals (Clue B).
• Magnesium: Lightest structural metal (Clue F).
• Non - silicates: Second major mineral group (Clue H).
• Calcium: Mineral in marble/limestone (Clue A).
• Crust: Thinnest Earth layer (Clue D).

Answer:

Oxygen: C
Iron: G
Mineral: I
Sodium: L
Aluminum: J
Silicates: E
Silicon: K
Potassium: B
Magnesium: F
Non - silicates: H
Calcium: A
Crust: D