James picks up a brittle black solid that he calls element Z. He notes that it can conduct
heat and electricity and that it is often used to make fires for cooking or heating. It can
also be found in another form, a clear solid that is very hard. This form of Z is often
used in fine jewellery. It does not react with acids.
a) ls element Z a metal or a non-metal? Give a reason for your answer.
b) Identify element Z.
c) Explain why element Z can be found as a brittle black solid, and a colourless hard
solid if it is the same element.β
Answers: 3
Chemistry, 21.06.2019 15:50
In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction. express your answer as a chemical equation. identify all of the phases in your answer.
Answers: 3
Chemistry, 22.06.2019 07:30
Compare and contrast the bohr model and the electron cloud models of the atom.
Answers: 1
Chemistry, 22.06.2019 12:00
What is the subscript for oxygen in its molecular formula
Answers: 1
James picks up a brittle black solid that he calls element Z. He notes that it can conduct
heat and...
Mathematics, 20.04.2020 22:30
English, 20.04.2020 22:30
Mathematics, 20.04.2020 22:30
Chemistry, 20.04.2020 22:30
Mathematics, 20.04.2020 22:30
English, 20.04.2020 22:30
Biology, 20.04.2020 22:30
English, 20.04.2020 22:30
Mathematics, 20.04.2020 22:30