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Chemistry Grade 7

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35 views3 pages

Chemistry Grade 7

Uploaded by

lilikalvaro78
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Remedial Chemistry CT 3

1.

2. Zirconium (Zr) is a metal in Period 5. Its main oxidation state is +4.


3.
4. The following table gives numbers of electrons, protons, and neutrons in
atoms or ions of a number of elements. Answer the following:
(a) Which of the species are neutral?
(b) Which are negatively charged?
(c) Which are positively charged?
(d) What are the conventional symbols for all the species?

[8]

5.

[6]

6.

[18]

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