736553
Descrição
Quiz por lizgracedaisy, atualizado more than 1 year ago
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Criado por lizgracedaisy
mais de 10 anos atrás
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Questão 1
Questão
How many different elements are there?
Responda
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Around 1000
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Around 200
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Around 100
Questão 2
Questão
Number of protons =
Responda
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number of neutrons
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mass number
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number of electrons
Questão 3
Questão
Choose the BALANCED equation
Responda
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Mg + O2 -> MgO
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2Mg + O2 -> 2Mg0
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Mg + O2 -> 2MgO
Questão 4
Responda
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It's found as Zinc naturally
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Electrolysis
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Reduction with carbon
Questão 5
Questão
Methods of extracting copper like Bioleaching and Phytomining are good because....
Responda
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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
Questão 6
Questão
Which of these is an alloy?
Responda
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Silver
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Bronze
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Gold
Questão 7
Questão
On the second electron shell (when showing an element's electronic structure) there can be up to....
Responda
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2 electrons
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4 electrons
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8 electrons
Questão 8
Questão
If neon has 10 protons, which diagram correctly shows its electronic structure?
Responda
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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)
Questão 9
Questão
If neon has 10 protons, which diagram correctly shows its electronic structure?
Responda
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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)
Questão 10
Responda
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Copper
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Potassium
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Hydrogen
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