Name: Joseph Dye Date: 02/11/2025 Partner: Hillary, Camryn
Physical & Chemical Changes
Safety: Ammonium chloride (NH4Cl) is harmful if
swallowed, causes serious eye irritation, and
Be cautious and always wear your safety is toxic to aquatic life.
goggles!!! The solutions used in this
experiment are dangerous and can cause Waste:
damage to your body and harm other people
working around you. Some of the products Any waste which contains copper sulfate
of reactions are also toxic, corrosive, (CuSO4), whether from completed reactions
flammable, and irritants. Be careful with or unreacted starting material, must be
reactions as they are occurring and disposed of in the heavy metals waste
conscientious to dispose of the reaction container.
products in the correct waste containers.
Waste from all other experiments and all
Always be careful and considerate of other
other unreacted starting materials may be
people working around you.
disposed of in the general inorganic waste
Hydrochloric acid (HCl) solution, 3 M is container.
corrosive and toxic. May cause severe skin
burns and eye damage. Materials:
Sodium hydroxide (NaOH) solution, 2 M seven medium test tubes
is corrosive and toxic. May cause severe test tube rack
skin burns and eye damage. test tube clamp
pipettes
Phenolphthalein, EtOH solution, 0.1% is metal spatula
highly flammable, causes serious eye sodium hydroxide (NaOH) solution, 2 M
irritation, may cause cancer, and is phenolphthalein, EtOH solution, 0.1%
suspected of causing genetic defects and/or hydrochloric acid (HCl) solution, 3 M
damaging fertility. baking soda (sodium hydrogen carbonate,
NaHCO3)
Copper sulfate (CuSO4) solution, 0.1 M is copper sulfate (CuSO4) solution, 0.1 M
toxic and an irritant. magnesium turnings
ammonium chloride (NH4Cl)
Magnesium turnings (bits of Mg metal)
are extremely flammable and can release
flammable gases.
Physical & Chemical Changes Procedure v.1.1 updated 4/25/24 by Mary Alvarez 1
, Name: Joseph Dye Date: 02/11/2025 Partner: Hillary, Camryn
Procedure:
The procedure consists of eight individual experiments. First set up 7 clean and dry test tubes in
the test tube rack. Then execute each experiment as follows:
Sodium hydroxide (NaOH) and phenolphthalein:
Procedure Detailed Observations
1. In the first test tube, add 10 drops of 2 M Color changed immediately from clear to
sodium hydroxide (NaOH) solution. magenta. Nothing else immediate happened
other than an abrupt color change.
2. Add one drop of 0.1%
phenolphthalein, EtOH solution to the test
tube.
Record your detailed observations and
include a photo of your test tube in the
space provided.
Prediction:
physical change: ☐
chemical change: X
Sodium hydroxide (NaOH) and phenolphthalein and hydrochloric acid (HCl):
Procedure Detailed Observations
1. In the same (first) test tube, add 13 drops When 13 drops of 3 M hydrochloric acid
of 3 M hydrochloric acid (HCl) solution. (HCl) were added to the previous solution, it
showed an abrupt or immediate color change
Record your detailed observations and back to clear. Nothing else occurred.
include a photo of your test tube in the
space provided.
2. Dispose of the mixture in the waste
container labeled General Inorganic
Waste
Prediction:
physical change: ☐
chemical change: X
Physical & Chemical Changes Procedure v.1.1 updated 4/25/24 by Mary Alvarez 2
Physical & Chemical Changes
Safety: Ammonium chloride (NH4Cl) is harmful if
swallowed, causes serious eye irritation, and
Be cautious and always wear your safety is toxic to aquatic life.
goggles!!! The solutions used in this
experiment are dangerous and can cause Waste:
damage to your body and harm other people
working around you. Some of the products Any waste which contains copper sulfate
of reactions are also toxic, corrosive, (CuSO4), whether from completed reactions
flammable, and irritants. Be careful with or unreacted starting material, must be
reactions as they are occurring and disposed of in the heavy metals waste
conscientious to dispose of the reaction container.
products in the correct waste containers.
Waste from all other experiments and all
Always be careful and considerate of other
other unreacted starting materials may be
people working around you.
disposed of in the general inorganic waste
Hydrochloric acid (HCl) solution, 3 M is container.
corrosive and toxic. May cause severe skin
burns and eye damage. Materials:
Sodium hydroxide (NaOH) solution, 2 M seven medium test tubes
is corrosive and toxic. May cause severe test tube rack
skin burns and eye damage. test tube clamp
pipettes
Phenolphthalein, EtOH solution, 0.1% is metal spatula
highly flammable, causes serious eye sodium hydroxide (NaOH) solution, 2 M
irritation, may cause cancer, and is phenolphthalein, EtOH solution, 0.1%
suspected of causing genetic defects and/or hydrochloric acid (HCl) solution, 3 M
damaging fertility. baking soda (sodium hydrogen carbonate,
NaHCO3)
Copper sulfate (CuSO4) solution, 0.1 M is copper sulfate (CuSO4) solution, 0.1 M
toxic and an irritant. magnesium turnings
ammonium chloride (NH4Cl)
Magnesium turnings (bits of Mg metal)
are extremely flammable and can release
flammable gases.
Physical & Chemical Changes Procedure v.1.1 updated 4/25/24 by Mary Alvarez 1
, Name: Joseph Dye Date: 02/11/2025 Partner: Hillary, Camryn
Procedure:
The procedure consists of eight individual experiments. First set up 7 clean and dry test tubes in
the test tube rack. Then execute each experiment as follows:
Sodium hydroxide (NaOH) and phenolphthalein:
Procedure Detailed Observations
1. In the first test tube, add 10 drops of 2 M Color changed immediately from clear to
sodium hydroxide (NaOH) solution. magenta. Nothing else immediate happened
other than an abrupt color change.
2. Add one drop of 0.1%
phenolphthalein, EtOH solution to the test
tube.
Record your detailed observations and
include a photo of your test tube in the
space provided.
Prediction:
physical change: ☐
chemical change: X
Sodium hydroxide (NaOH) and phenolphthalein and hydrochloric acid (HCl):
Procedure Detailed Observations
1. In the same (first) test tube, add 13 drops When 13 drops of 3 M hydrochloric acid
of 3 M hydrochloric acid (HCl) solution. (HCl) were added to the previous solution, it
showed an abrupt or immediate color change
Record your detailed observations and back to clear. Nothing else occurred.
include a photo of your test tube in the
space provided.
2. Dispose of the mixture in the waste
container labeled General Inorganic
Waste
Prediction:
physical change: ☐
chemical change: X
Physical & Chemical Changes Procedure v.1.1 updated 4/25/24 by Mary Alvarez 2
