736553
Description
Quiz by lizgracedaisy, updated more than 1 year ago
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Created by lizgracedaisy
about 10 years ago
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Question 1
Question
How many different elements are there?
Answer
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Around 1000
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Around 200
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Around 100
Question 2
Question
Number of protons =
Answer
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number of neutrons
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mass number
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number of electrons
Question 3
Question
Choose the BALANCED equation
Answer
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Mg + O2 -> MgO
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2Mg + O2 -> 2Mg0
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Mg + O2 -> 2MgO
Question 4
Question
How would Zinc (Zn) be extracted from its ore?
Answer
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It's found as Zinc naturally
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Electrolysis
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Reduction with carbon
Question 5
Question
Methods of extracting copper like Bioleaching and Phytomining are good because....
Answer
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High grade copper ores don't exist
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High grade copper ores are running out
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Demand for copper is decreasing so other methods are too large scale
Question 6
Question
Which of these is an alloy?
Answer
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Silver
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Bronze
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Gold
Question 7
Question
On the second electron shell (when showing an element's electronic structure) there can be up to....
Answer
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2 electrons
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4 electrons
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8 electrons
Question 8
Question
If neon has 10 protons, which diagram correctly shows its electronic structure?
Answer
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Image:atom_lithium.gif (image/gif)
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Image:atom_sodium.gif (image/gif)
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Image:atom_neon.gif (image/gif)
Question 9
Question
If neon has 10 protons, which diagram correctly shows its electronic structure?
Answer
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Image:atom_lithium.gif (image/gif)
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Image:atom_sodium.gif (image/gif)
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Image:atom_neon.gif (image/gif)
Question 10
Answer
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Copper
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Potassium
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Hydrogen
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