This document defines and compares different types of matter and materials. It discusses the definitions of mass and volume and whether objects have a definite shape and volume. It also defines physical and chemical changes, mixtures, properties of materials like rigidity and flexibility, natural versus manufactured materials, uses of packaging and materials, and why reducing, reusing and recycling resources is important.

1. By
Martín

2. Important definitions:
Mass:how much matter
an object has
Volume: the quantity of space
an object takes up

3. Do they have a definite shape? Yes, they do
Do they have a definite volume?
Yes, they do

4. Do they have a definite shape? No, they don´t
Do they have a definite volume?
Yes, they do

5. Do they have a definite shape? No, they don´t
Do they have a definite volume?
No, they don´t

6. Physical changes
happen when
matter changes
shape and
state, but the
substance
doesn´t change
Ice melting
Bending iron
Compressed air
Leaves changing
colour
Elastic bands
stretching

7. Chemical changes are when new substances are produced
Burning a
substance
Exposing metals to
air
Exposing an apple
to air

8. A mixture is
something that
contains two or
more substances.

9. Rigid: it
doesn´t bend
easily
Flexible: we
can bend it
Elastic: it
returns to its
original shape
Resistant:
difficult to
break Fragile: it
breaks easily
Waterproof:
water can´t pass
through it Permeable:
water can pass
Heat
conductor:
heat passes
through it
easily
Heat
insulator:
heat can´t
pass easily

10. Natural materials come from nature Manufactured materials are
made from natural materials
which are transformed in a
manufacturing process.Animals Plants
Minerals
Silk
Leather
Wool
Rubber
Cotton
Wood
Rocks
Oil

11. Packaging Shopping
bags, boxes and
jars
Glass, plastic, al
uminium, paper,
cars, electrical
appliances, furn
itures.
Because
natural
resources will
run out if we
take too many
of them
Why are the
three R´s
important?