Combination A Combination B
Before
Observations
Powder is fine and white
Water has no smell
Materials are the same
temperature as B
During
Observations
The water seems to
disappear into the salt
The bag with water and
salt does not change
temperature
Powder is fine and white
Vinegar has a strong smell
Materials are the same
temperature as A
The baking soda and vinegar
produce a lot of bubbles
The bag expands
The bag with baking soda
and vinegar feels colder than
A
After
There is no visible water in There is a small amount of
Observations Bag A
white powder in Bag B
The liquid has very little
smell
Note: Mass remained the same for both A and B during the experiment.
16
When a substance undergoes a chemical change the result is a new substance with new
properties. However, when a substance undergoes a physical change its en reversible The
substance has new physical properties, but its chemical properties do not change
Based on your observations of combinations A and B above, select all of the statements below
that are true
a Salt and water went through a physical change
Salt and water went through a chemical change
c. Basang soda and salt went through a chemical change
d. Baking soda and winegar went through a physical change
Baking soda and vinegar went through a chemical change