Chemistry - Rocks And Metals Quiz
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This Chemistry quiz focuses on Rocks and Metals, covering key concepts like the reaction of water with quicklime, properties of limestone, thermal decomposition, and the reactivity series. It assesses understanding of chemical reactions and material properties, crucial for learners in chemistry education.
- 1.
What Happens when you add Water to quicklime?
- A.
It becomes lime water.
- B.
It becomes Slaked lime.
- C.
It stays the same.
Correct Answer
B. It becomes Slaked lime.Explanation
Calcium Oxide + Water ------> Calcium HydroxideRate this question:
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- 2.
What is limestone mainly made of?
Correct Answer
calcium carbonateExplanation
limestone was formed from plants and animals a million years ago.Rate this question:
- 3.
What is the scientific name of breaking down a chemical by heating?
- A.
Demonetization
- B.
Melting
- C.
Thermal Decomposition
Correct Answer
C. Thermal DecompositionExplanation
There are also other ways to split compounds, like electrolysisRate this question:
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- 4.
Slaked limes chemical name is calcium hydroxide?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The chemical equation is Ca(OH)2Rate this question:
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- 5.
Which three from the list are used to make mortar
- A.
Slaked Lime
- B.
Salt
- C.
Cement
- D.
Lime Water
- E.
Sand
- F.
Iron
- G.
Water
Correct Answer(s)
A. Slaked Lime
E. Sand
G. WaterExplanation
Mortar was used in roman times to hold bricks and other materials together.Rate this question:
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- 6.
The way in which we extract a metal depends on its what?
- A.
Reactivity Series
- B.
Value
- C.
Shape and Size
Correct Answer
A. Reactivity SeriesExplanation
Potassium is the most reactive and Platinum is the least reactive.Rate this question:
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- 7.
Powdered Limestone + Sand + Sodium Carbonate = Concrete
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Water, cement and sand makes concrete.Rate this question:
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- 8.
Which metal is mainly used for making aircraft?
Correct Answer
aluminiumExplanation
aluminium is strong and light, which is perfect for aircrafts.Rate this question:
- 9.
Atoms consist of a nucleus surrounded by _________.
Correct Answer
electronsExplanation
Atoms consist of a nucleus surrounded by electrons. The nucleus, located at the center of an atom, contains protons and neutrons. Electrons, which have a negative charge, orbit around the nucleus in specific energy levels or shells. These electrons are responsible for the chemical properties and bonding behavior of atoms.Rate this question:
- 10.
We extract iron using a ______ _______.
Correct Answer
blast furnaceExplanation
The iron produced by a blast furnace is not that useful as it is only 96% iron.Rate this question:
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Current Version
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Oct 30, 2024Quiz Edited by
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Jan 20, 2011Quiz Created by
Overlordtom
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