The properties of matter

1. By
Mr / Ismail Etman

4. • Volume :
•
•
•Note:
•

6. • How can I measure the volume of liquids?
•
• The surface of the liquid is curved.
• To measure the volume of the most of the liquids,
• Such as water,
• You must look at the bottom of the meniscus.
•Meniscus :
• The curve at a liquid's surface by which one
measure the volume of the liquid.

9. • Mass :
• The amount of the matter in the object.
• Any object has more amount of matter, has more
mass.
• Note:
• The mass of an object is the same no matter where
in the universe the object is located.
• Any change in the amount of the matter of an object
causes change in its mass

10. Mass
 The amount of the matter in the object.
 The more you have mass, the greater the amount of matter.
 The mass is always constant for an object at any place in the
universe.
 The mass is expressed in units :
 Kilograms (kg).
 Grams (g).
 Milligrams (mg).
 Mass is measured by using a balance.
Weight
 Weight is the force on an object due to gravity.
 The more you weigh, the greater the force.
 Weight is relative to the amount of gravity, the weight is not constant
for an object.
 The weight is expressed in units :
 Newton (N).
 Mass is measured by using a spring scale.

11. • One newton is about equal the weight of an
object that has a mass of 100 g on Earth.
• SO, it's easy for us, by knowing the mass of an object on the Earth,
to calculate its weight, and vice versa.
• Solve problems…

15. By
Mr / Ismail Etman

16. can be observed without changing the identity of
the matter.
is a characteristic of a substance that doesn't involve a chemical
change.
1. Conductivity.-----< How heat or electricity moves through a substance
2. State.-------< The physical form of matter (solid, liquid, or gas)
3. Malleability.-------< The ability of a substance to be rolled into a shape
4. Ductility.-------< The ability of substance to be pulled into wire
5. Solubility .-------< The ability of a substance to dissolve
6. Density. .-------< How compact a substance is
7. Compressibility .-------< The ability to be squeezed or pressed together

17. The amount of matter in a given space.
Why density is used to identify substances?
Because the density of a substance is always the same at a given
pressure and temperature.

19. • If the density of an object is less than the density of water, the
object will float.
• And also,
• if the density of an object is more than density of water, it will sink

21. • A physical change is a change that affects one or more
physical properties of a substance.
• Physical changes don’t form new substances.
• Physical change is a change of matter from one form to another
without a change in chemical properties.

22. 2. When certain substances
dissolve in other substances.
When you dissolve sugar in water, the
sugar seems to disappear.

24. By
Mr / Ismail Etman

25.  It describes a substance based on its ability to change into a new substance
that has different properties.
 It is a property of matter that describes a substance's ability to participate in
chemical reactions.

27. • The ability of two or more substances to combine and form one or more new
substances.
• The iron has the chemical property of reactivity with oxygen.
• When iron is exposed to oxygen, it trusts.

28. 
o You can see that wood is flammable only while it is burning.
o You can observe that gold is non-flammable only when it won’t burn.

 physical properties
• Such as density and solubility.
 chemical properties
• Such as flammability and reactivity.

29. •
o Soured milk smells bad because bacteria have formed new substances in the milk.
o The statue of liberty is made of orange-brown copper but it looks green from the metal’s
interaction with air.

30. • Water is made of two hydrogen atoms and one oxygen atom.
• whether water is a solid, liquid or gas its composition is the same.
• so, physical changes don’t change the composition of a substance.
• through a process called electrolysis, water is broken down into
hydrogen and oxygen gases.
• the composition of water has changed, so you know that a chemical
change has taken place.

31. -

o Because the composition does change.

o Because the composition does not change.