Question

Activity (Observation and Inference)
Topic- physical and chemical changes
Time-1 week
Observation-
inference-
Activity
Rusting of Iron
Material Required: 2 long
iron nails, water, plate, box,
Grease/oil
Procedure:
1 Put one iron nail in
a plate in open
2 Put another iron
nail also in open but is
coated with oil
3 Keep them for 1
week
4. Record your
observation for both the
iron nails and identify the
change (temporary
permanent)
Record your​

Answer 1

Answer:

Rusting is an example of a chemical change. A chemical property describes the ability of a substance to undergo a specific chemical change. A chemical property of iron is that it is capable of combining with oxygen to form iron oxide, the chemical name of rust.

Answer 2

too big soo please make short