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Classifying Unfamiliar Substances (Chemical names): Questions to be asking
1. Is it on the Periodic table?
a.Yes – Then its an element
b. No – Go to Number 2.
2. Is it an “Ide”?
a.Yes – Then it is a compound
b. No – Go to Number 3
3. Is it an “Ate”?
a.Yes – Then it is a compound
b. No – Go to Number 4
4. Is it an “Ane”?
a.Yes – Then it is a compound
b. No – Go to Number 5
5. Does it have “and” in it?
a.Yes – then it is a Mixture
b.No – then the substance could still be a Mixture
10
Substance
Classification
(eg Element)
Reason
Oxygen
Element
On periodic table
Petroleum




Hydrogen and
Helium




Iron Sulphide




Carbon Dioxide




Salt Water




Milk and Sugar




Silver Nitrate




Sodium Carbonate




Carbon Electrode




Astatine




Argon




Oxidane




Iron and Sulphur




Methane

Sagot :

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Answer:

1) petroleum, mixture, not found on periodic table

2) hydrogen and helium, mixture, contains "and"

3) iron sulphide, compound, ends with "ide"

4) carbon dioxide, compound, ends with "ide"

5) salt water, mixture, not found on periodic table

6) milk and sugar, mixture, contains "and"

7) silver nitrate, compound, ends with "ate"

8) sodium carbonate, compound, ends with "ate"

9) carbon electrode, mixture, not found on periodic table

10) astatine, element, found on periodic table

11) argon, element, found on periodic table

12) oxidane, compound, contains "ane"

13) iron and sulphur, mixture, contains "and"

14) methane, compound, contains "ane"

Explanation:

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