Question

Directions: Use the scientific method in solving problem through
What can you put on an apple sliceto
What’s More
experiment.
Observe
The apple slices turns brown.
Ask a Question
keep it from turning brown
fit in the
observe what happens to ar apple after it has been sliced
put one of these things on each slice water, milk, lemon juice, soda
4. po they all turn brown? which on turns brown first? Which uns
3
?
Water
Miak
Lemon
Soda
Make a
Prediction
Make a Plan
and
Follow it
A ON
Watch what happens to each.
BR
brown last?
Lemon
Record the
Water
MILK
soda
results
Draw o
Conclusion
on an
If you put
apple, it will not turn brown as fast.
I
think
Answer the following questions.
1. What is the problem in this activity?
2. Formulate your hypothesis. (List down at least 3 hypotheses)
3. What is the dependent variable?
4. What is the independent variable?
5. Analyze your results. Which type of liquid will prevent the apple from
turning brown?
a. lemon
b. milk
c. soda
d. water​

Answer 1

Which type of liquid will prevent the apple from turning brown?

a. lemon  b. milk  c. soda  d. water​

Lemon will prevent the apple from turning brown.

How do lemon and other citrus liquids prevent fruits from turning brown?

• It is because lemon, vinegar, and soda have lower pH.
• These liquids are acidic in nature and when they are applied to the surface of an object or fruit they lower the pH.
• By lowering pH they create resistivity against the microbes and protect the food items.