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1. What happens when something freezes?

Question 1 of 10

2. What is the atomic number of an oxygen atom?

Question 2 of 10

3. Tungsten has the chemical symbol W. Suggest the chemical name of WO₃.

Question 3 of 10

4. What is the empirical formula of an alcohol with the analysis; 52.2% C, 13.0% H and 34.8% O?

Question 4 of 10

5. Is lead carbonate soluble?

Question 5 of 10

6. What is the empirical formula of a compound in which 0.48 g of carbon combines with 0.08 g of hydrogen and 0.64 g of oxygen?

Question 6 of 10

7. How many neutrons in a typical atom of magnesium?

Question 7 of 10

8. Which ester is produced when ethanol and ethanoic acid react in the presence of an acid catalyst?

Question 8 of 10

9. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of oxygen (O₂), how many electrons should be shown in areas 1, 2 and 3?

Question 9 of 10

10. What is the name of this molecule?

Question 10 of 10


 

2022-03-09T21:22:06+00:00Categories: Uncategorized|Tags: |
tutorMyself Chemistry is a non-commercial tool to support learning for Edexcel iGCSE Chemistry at one of Britain's top public schools.
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Section 1: Principles of chemistry

      a) States of matter

      b) Atoms

      c) Atomic structure

     d) Relative formula masses and molar volumes of gases

     e) Chemical formulae and chemical equations

     f) Ionic compounds

     g) Covalent substances

     h) Metallic crystals

     i) Electrolysis

 Section 2: Chemistry of the elements

     a) The Periodic Table

     b) Group 1 elements: lithium, sodium and potassium

     c) Group 7 elements: chlorine, bromine and iodine

     d) Oxygen and oxides

     e) Hydrogen and water

     f) Reactivity series

     g) Tests for ions and gases

Section 3: Organic chemistry

     a) Introduction

     b) Alkanes

     c) Alkenes

     d) Ethanol

Section 4: Physical chemistry

     a) Acids, alkalis and salts

     b) Energetics

     c) Rates of reaction

     d) Equilibria

Section 5: Chemistry in industry

     a) Extraction and uses of metals

     b) Crude oil

     c) Synthetic polymers

     d) The industrial manufacture of chemicals

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