1. Ch. 2.1 & 2.2
Sara Browner

2. Mixtures 2.1
• heterogeneous
Heterogeneous is a mixture with two or more
component, that are noticeably different.
• homogeneous
Homogeneous is a mixture with one or more
components, that are so evenly distributed
that you can barely tell the difference.

3. Elements 2.1
• An element is a substance that can not be broken down into
simpler substances
• Elements are pure substances made up of one type of matter
Smallest particle = atom

4. Compounds 2.1
• Compounds are substances that is made from two or
more simpler substances.
an example of a compound would be sugar

5. Viscosity 2.2
• Viscosity= resistance to flow.
Honey has a high viscosity Maple syrup has a higher
because it is thicker and viscosity when cold and a
heaver than vinegar witch lower viscosity when it is
has a low viscosity. heated up.

6. Conductivity 2.2
• Conductivity= ability to allow heat to
flow
wood on the other hand has a low conductivity rate
Metal has high conductivity because it flows
because it does not have the ability to allow heat
heat all throughout the substance.
flow.

7. Hardness 2.2
• There are many ways to compare the
hardness between objects.
• One way is to see witch one scratches
the other
• The diamond is the hardest material
known

8. PART TWO

9. Distillation
• Distillation= a method of separating mixtures based on differences
of components in a boiling liquid mixture

10. Evaporation
• A transition from a liquid to a gas by
vaporization, and only happens on the
surface.

11. Filtration
• Filtration is the mechanical or physical
operation that is used for the separation of
solids from fluids by interposing a medium, the
fluid can pass.

12. Ch. 2.3

13. Chemical Properties 2.3
You know something is a chemical change when you can
never get back what you had, and the chemical formula
is not the same.
• There are two examples of chemical change.
• Flammability and Reactivity

14. Chemical Change 2.3
Production of a gas
BAKING SODA AND VINEGAR-
reacts when carbon dioxide
• h expands, and causes to rise
Change in color
Formation of a Precipitation
RUST- Oxygen gets to it
MILK AND LEMON JUICE-
When aced is added,
proteins in the milk undergo
a chemical change

15. Chemical and Physical Change 2.3
• To know if physical or chemical change,
the composition of the matter stays the
same.

16. • Is this a physical change or a chemical
change?

17. • Is this a physical or chemical change?

18. • How do you figure out if it is a
chemical or physical change?

19. • How do you know if it is a chemical
change?

20. • What is an example of physical change?

21. THE END