1. Classifying Matter

2. Atom The atom is a basic unit of matter.
It consists of a dense central nucleus.
It is surrounded by a cloud of negatively charged electrons.
The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons.

3. Element
A chemical element is a pure chemical substance consisting of ONE type of atom.
It is distinguished by its atomic number.
Which is the number of protons in its atomic nucleus.
Elements are divided into metals, metalloids, and nonmetals

4. molecule
Molecules form when two or more atoms make chemical bonds with each other.
It doesn't matter if the atoms are the same or are different from each other.
They are joined together chemically

5. Examples of Molecules H2O (water) N2 (nitrogen) O3 (ozone)
CaO (calcium oxide)
C6H12O6 (glucose, a type of sugar)

6. Compound
A substance that consists of two or more different types of atoms (elements) bonded together.
It can have very different properties from the original elements
All compounds are molecules but not all molecules are compounds

7. What Is the Difference between a Molecule and a Compound?
A compound is a type of molecule.
A molecule is formed when two or more atoms of an element chemically join together.
If the types of atoms are different from each other, a compound is formed.
Not all molecules are compounds, since some molecules, such as hydrogen gas or ozone, consist only of one element or type of atom.

8. Hopefully this will help…

9. Let’s clarify more….

10. Examples of Compounds H2O Water C6H12O6 Glucose C2H6O Alcohol NaCl
Examples of Formulas for compounds
Examples of names of common compounds
H2O
Water
C6H12O6
Glucose
C2H6O
Alcohol
 NaCl
Salt
Ethanol
C2H4O2
Vinegar
NH3
Ammonia
Acetic Acid
C4H10
Butane
H2SO4
Sulfuric Acid
CH4
Methane
C12H22O11
Sucrose
C3H8
Propane
NaHCO3
Baking Soda
N2O
Nitrogen
C6H8O7
Citric Acid
C8H18
Octane
C10H16O
Camphor

11. Mixture Most matter around you. Can be a compound or element.
A combination of substances that remain the same individual substances and can be separated by physical means.
Example- mixing apple, oranges, and bananas to make a fruit salad. You do not change them into a new kind of fruit. You could still physically separate it back to their original form.

12. 2 types of Mixtures
Heterogeneous Mixtures You can see the separate parts of them. Different properties in different areas of the mixture. Example- lemonade and ice Homogeneous Mixtures All the parts are blended evenly. You can’t see the difference between the parts. Example- Sugar and water, homogenized milk

13. Let’s restate….

14. Solutions A homogeneous mixture composed of only one phase.
In such a mixture,
a solute is a substance dissolved in another substance, known as a solvent. The solvent does the dissolving.
Solute- The substance that dissolves into the solvent.
Solvent- The substance that does the dissolving.
Solubility- measures how much of a substance dissolves in a given volume of liquid. Example, dirt and water, sugar and water

15. Next we will talk about Chemical equations Pure Substances
Chemical bonds
Physical bonds