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Worksheet 1 . Topic 1

Set C: Classifying matter Objective: To test your ability to classify different types of matter
by symbols, names, and diagrams

Classify each of the followings with the combination of terms listed below.
Pure substance – element Mixture – homogenous
Pure substance – compound Mixture – heterogeneous

20. HCl(aq) __________________________ 26. Sugar _____________________________

21. KBr (s) ___________________________ 27. Soil _____________________________

22. Cl2(g) ___________________________ 28. Water _____________________________

23. CH2(OH)2 aq) _______________________ 29. Sodium _____________________________

24. Hg(l) ______________________________ 30. Iron oxide ___________________________

25. NH3(l) _____________________________ 31. Salt water ___________________________

Classify each diagram as: pure substance–element or pure substance–compound or Mixture

Atom Y:   ••   •   • 
• •• ••  
Atom Z:    • 

Key
32. _______________ 33. _________________ 34. _______________
________________ _________________ _______________

Set D: Drawing diagrams of matter: Objective : To test your ability to use symbols to draw diagrams
to represent the different types of matter

Symbols of two different atoms are given below.
Atom X: Ο Atom Y: ∆

In the boxes provided for number 35 to 37, draw diagrams to represent the different types of matter.

35. Diatomic element X 36. Compound X2Y2 37. A mixture of diatomic element Y

and compound X2Y

Draw at least five units Draw at least five units Draw at least five units

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