This document provides instruction and answers for lessons on chemistry topics. It begins by describing the components of a scientific investigation such as the aim, method, results, and conclusion. It then discusses the importance of controlling variables when conducting experiments. The rest of the document provides answers to questions about experiments on topics like measuring how balloon size changes with temperature and separating mixtures using techniques like filtration and magnets. It emphasizes the importance of reflection in learning science concepts.

1. SHORT REVIEW
Instruction:
Write down your answers on the given
worksheet.
LESSON 1 - Chemistry

2. Answers:
1. Ask question/Aim, What to
do/Method/Procedure, Results/What you
measured/data, Conclusion/What you learned
2. To make FAIR TEST:
i. Change something (Independent variable)
ii. Measure something (Dependent variable)
iii. Keep everything else the same (Controlled variable)
3. For results to be VALID

3. LESSON PURPOSE
1. Describing & writing the components
of scientific investigation
2. How important this is for learning &
answering answer questions in
science

4. Language Practice
Results, Aim,
Conclusion

5. Component 4-A
FAIR TESTING
Controls all but one
variable when attempting to
answer a scientific
question.

6. Component 4-A
Lesson
Stem:

7. Component 4-B
Instruction:
Write down your answers
on the given worksheet.

8. Answers:
1. Thermometer
2. Long & short DIAMETER (using ruler)/
Circumference (using tape measure)
3. Must be kept the same:
 balloons are same TYPE & SIZE
 method of measuring size of balloons
 same thermometer to measure temperature
 experiment must be done on the SAME DAY so the weather
conditions will be the same for all measurements

9. Component 4-C
Instruction:
Write down your answers
on the given worksheet.

10. Answers:
1.In table form
2.Proves that balloons expand & even
burst when temperature rises
3.As the temperature increased by
degrees, the size of the balloons
increased till they burst.

11. CONCLUSION
REMEMBER!!!!!
“Good Learners reflect on their learning.”

12. SHORT REVIEW
Instruction:
Write down your answers on the given
worksheet.
LESSON 2 - Chemistry

13. Answers:
1. Sieve/Strainer
2. Magnets
3. Evaporation – heat the liquid so it evaporates from
the mixture & leaves the solid behind
Filtering – the solid is removed from the mixture when
you pour the mixture through a filtering device ( ex. filter
paper) & the solid stays behind in the filter paper.

14. Language Practice

15. Component 4-A

16. Component 4-B
Instruction:
Write down your answers
on the given worksheet.

17. Answers:
1.Magnet
2.Add water & then filter the sand
out
3.Heat the solution of white crystals
to drive off the water & then they
would be left with the white crystals

18. Component 4-C
Instruction:
Write down your answers
on the given worksheet.

19. Answers:
1. Bunsen burner/ evaporating
dish
2. Filtration, evaporation &
magnet
3. (a) still filter out the sand &
nails but the nails would tear
the filter paper
(b) Use magnet to get rid of the
nails.

20. CONCLUSION
REMEMBER!!!!!
“Good Learners reflect on their learning.”