The document outlines a lab activity aimed at distinguishing between physical and chemical changes. It includes instructions for creating a table to record observations during experiments with salt and water, and magnesium with HCl, highlighting the reversible nature of physical changes versus the irreversible nature of chemical changes. The document also provides definitions and signs of each type of change, as well as additional class activities related to atomic structure.

1. 1.CHEMICAL VS PHYSICAL
CHANGE

2. LEARNING OBJECTIVE
 To distinguish between a physical and chemical change by reversing a
physical change

3. LAB CLASS
Write todays date and write the topic-
Physical and Chemical Change Lab
Stick lab instructions in your book.
Draw up a table 4 columns and 3 rows

4. What does it
look like before
the
experiment?
What does it look
like during the
experiment?
What does it
look like after
the experiment?
Salt +
water
Magnesiu
m + HCl
Your table should look like this

5. COPY THIS QUESTION IN YOUR BOOK
AND ANSWER THEM.
One of the reactions you did today is a PHYSICAL change - meaning that it is
reversible.
The other reaction is a CHEMICAL change - meaning it is NOT reversible.
1.Explain which of the experiments you think is reversible and why.

6. 1. CHEMICAL CHANGE
A chemical change occurs when a new
substance is formed.

7. SIGNS OF A CHEMICAL
CHANGE
A gas have been given off
There is a colour change
There is a different smell
Heat given out or absorbed
Change cannot be easily reversed.

10. PHYSICAL CHANGE
Is not a permanent change
A physical change is a change in
matter that alters its form but not its
chemical identity.
The size or shape of matter often
changes, but there is no chemical
reaction

15. CLASS ACTIVITY
Complete Scipad page 8 and 9
And Do the Scipad online “ Nature of atoms”-
Chemical Change Vs Physical Change
Atoms
Elements