1. The Matter of Facts!

2. Matter Everything around us is matter! So what’s the matter?
Anything that has mass and takes up space.
Everything around us is matter!
So what’s the matter?
It’s a matter of fact(s)!

3. Identifying Matter
What’s the matter?

4. Physical Properties of Matter
Physical properties are characteristics of a substance that can be observed or measured without changing the substance into something else.
Color
Hardness
Taste
Length
Width
Height
Weight
Mass
Volume
Density
Ability to conduct heat, electricity, or sound
Ability to become a magnet

5. Mass – The amount of matter in an object.
Scientists use a balance scale to measure mass.
The object’s unknown mass is compared to a known mass.
Mass is recorded in grams or kilograms

6. Weight – A measure of the pull of gravity on an object.

8. What are some of the physical properties of these boxes?

9. Can you find ways to tell these apples apart?

10. Volume = length X width X height expressed in cubic units
Volume – The amount of space an object takes up.
Volume = length X width X height
V = l x w x h
expressed in cubic units
Simple enough when it is a box, but what if the solid is irregular?
What if you wanted to know the volume of an apple?
What then?

11. Volume can be found by measuring Displacement
Measurement of the amount of liquid that a solid displaces.
1cu3=1ml -

12. You can use a graduated cylinder such as one of these!
How you ask?

13. When using a graduated cylinder to measure, you must
be careful to measure the bottom of the level of liquid. This curved look of the liquid is known as the meniscus.

14. Density Concentration of Matter in an object Density equals mass
divided by volume

15. States of Matter
No, not those states, these states…..

17. 3 States or Phases of Matter
Solid:
Has a definite shape
Has a definite volume
Molecules are very close together
Liquid:
Does not have a definite shape (will take the shape of a container)
Molecules are a little further apart and vibrate a bit quickly
Gas:
Does not have a definite volume
Molecules are very far apart and vibrate very quickly!

18. The changing of the states or phases of matter

19. Changes in state are physical. They do not change the substance.
Changes in state are reversible!
Freezing - liquid to solid
Melting - solid to liquid
Boiling - liquid to gas
Condensation - gas to liquid
Sublimation - solid to gas
Evaporation - when particles escape from a nonboiling liquid and become a gas

21. Melting and Boiling Points
Melting Point & Freezing Point
are the same!
Water freezes at 0C or 32F
Boiling Point
Temperature at which a substance changes
from a liquid to a gas.
Water boils at
100C or 212F

22. Fahrenheit and Celsius Temperatures
Conversion of
Fahrenheit and Celsius Temperatures
Formula
°C  x  9/ = °F
(°F  -  32)  x  5/9 = °C

23. Mixtures
Combination of 2 or more
different kinds of matter that
keep their own physical
properties and can be easily separated.
Solution - Type of mixture in which particles of 2 or more substances are mixed and not easily separated.

24. Solubility - the ability to be dissolved.
Solutions are not easily separated
Sugar is soluble in water.
Pepper is not!

25. Suspension - a mixture of liquids with particles of a solid which may not dissolve in the liquid.
The solid may be separated from the liquid by leaving it to stand, or by filtration
Examples: sand in water
oil in water

26. Chemical Properties of Matter
Changes in which one or more new substances are formed are called
chemical changes or reactions.

27. Marshmallow melting is physical change.
Marshmallow burning is a chemical change

28. Sodium + Chlorine = Sodium Chloride (Salt)
These are examples of chemical
change or reactivity because light or heat
or both
are
produced.
Burning Candle

29. Reactivity - The ability of a substance to react chemically
Clues that identify reactivity
or chemical change:
Change in color
Production of light
Production of heat
Production of a gas

30. Baking soda + vinegar = gas Carbon dioxide is produced
Reactivity
Example!
Baking soda + vinegar = gas
Carbon dioxide is produced

31. Reactivity
Example!
Burning Candle - heat and light are produced

32. Chemical Reaction Iron rusting is an example of
chemical reaction or change
A change in color occurs
Iron conducts electricity Rust does not conduct electricity
Different densities
Different melting points

33. Chemical property of being able to burn.
Combustibility
Chemical property of being able to burn.

34. Used to identify substances based
Flame Test
Used to identify substances based
on the color of the flame they produce
when burned.

35. Law of Conservation of Matter
Matter is neither created nor destroyed during a
physical or chemical change.
The amount of matter is always the same.

36. The END for now….more madness to come later!