1. Chapter #2
Matter

2. Notes 2.1
Chemistry: is the branch of science that studies composition of matter and how it changes.
Matter: is anything that has mass and occupies space. Examples air, water, you…
Light, sound, and electricity are not matter. They have no mass or volume.

3. Atom: is the smallest particle that has the properties of an element.
Element: is a substance that cannot be broken down into simpler substances.
Atom: is the smallest particle that has the properties of an element.
1 square on the periodic table
2 or more squares on the periodic table

4. Compound: is a substance made of atoms of more than one element chemically bound together.
Molecule: is the smallest unit of a substance that exhibits all the properties characteristic of that substance.

5. Subscripts little numbers. Represent # of atoms Examples
Chemical Formula is used to show how many atoms of each element are present.
Subscripts little numbers. Represent # of atoms
Examples
CH4
C6H12O6
C16H10N2O2
H2O

6. A pure substance is any matter that has a fixed composition and definite properties.
A mixture is a combination of more than one pure substance. They are physically mixed.

7. Miscible describes two or more liquids that are able to dissolve into each other in various proportions.
Immiscible describes two or more liquids that do not mix into each other.

8. A heterogeneous mixture is a combination of substances that are not uniformly mixed. Ex.. Italian Dressing
In a homogeneous mixture the substances are uniformly mixed throughout the compound. Ex.. Salt water

9. Hetero

10. Chapter 2.2 Notes Kinetic Theory
All Matter is made of atoms and molecules that act like tiny particles.
These particles are always in motion.
The higher the temp the faster they move
At the same temp heavy gases are slower than lighter gases.

11. 3 States of matter
Solid particles have a rigid structure and a definite shape and volume
Liquid particles are fluids the particles can slide past one another. No definite shape but a definite volume
Gas particles are fluid. No definite shape or volume.

12. Viscosity- the resistance of liquid to flow…
The thicker it is the higher the viscosity.

13. Evaporate- changing from a liquid to a gas.
Condenses- changing from a gas to a liquid.
Melting- changing from a solid to a liquid.
Freezing- changing from a liquid to a solid
Sublimation- changing from a solid to a gas

14. Evaporation

15. The law of conservation of mass- Mass cannot be created or destroyed.
The law of conservation of energy- Energy cannot be created or destroyed.

16. Chapter 2.3 Notes
Chemical Properties – the way a substance reacts to form new substance with different properties
Reactivity – the ability to combine chemically with another substance
Flammability – is the ability of a substance to burn when reacting with oxygen and being exposed to a flame

17. Physical property – a characteristic of a substance that can be observed or measured without changing the composition of the substance
Melting point – the temperature in which a substance turn from a solid to a liquid
Boiling point – the temperature at which a substance turn from a liquid to a gas

18. Density – the mass per unit volume of a substance
Density equation
D=m/V
Density=mass/volume
Buoyancy-the force with which a more dense fluid pushes a less dense substance upward

19. Chemical change- a change that occurs when a substance changes composition by forming one or more new substances
Odor, fire, light, rusting

20. Physical change- a change in the physical form or properties of a substance that occurs without a change in composition
Changes in state from solid to liquid to gas are physical changes it is still the same substance…

21. Work cited
“Cartoon”. Dec. 12,
“Pure Substances Diagram”. Dec. 12,
“Matter Diagram”. Dec. 12,
“Heterogeneous Mixture.” Dec. 12,
“Homogeneous Mixture.” Dec. 12,
“Immiscible”. Dec. 12,
“Miscible”. Dec. 12,
States of Matter. Dec. 14,
“Motor oil viscosity”. Dec. 14,
“Pouring Motor oil”. Dec. 14,
“Change of state flow chart”. Dec. 14,
“Fireplace”. Dec. 18,
“Flask on fire”. Dec. 18,
“Chemical change pictures”. Dec. 18,
“Physical changes chart”. Dec. 18,
“Change in state”. Dec. 18,