1. Types of Matter Warm – Up #1
1. Who came up with the idea of conservation of matter? Give an example of conservation of matter?
2. List parts of an atom. Include location and charge.
3. How many neutrons are in Boron?
4. How many electrons are in Lithium?

2. Types of Matter 4-2

3. Elements Elements – matter made up of only one type of atom
Example – gold or iron

4. Natural Elements 90 elements commonly found on Earth Nitrogen, Oxygen
Gold, Silver

5. Synthetic Elements
Synthetic Elements – made in machines called particle accelerators
Not commonly found on Earth

7. Periodic Table Based on the work of Dimitri Mendeleev
Periodic Table – chart that organizes elements by the number of protons in the nucleus

9. Periodic Table Provides atomic mass Pattern of electrons
Solid, liquid, or gas

11. Chemical Symbol 1, 2, or 3 letter abbreviation Hydrogen – H
Some come from Latin Words
Iron – Fe
ferrum

12. Ion Ion – atom that has lost or gained one or more electrons
Has a charge

13. Isotope Isotope – atoms of the same element
Different number of neutrons

14. Chemical Formulas Chemical Formulas – made up of symbols and numbers
Tell what elements and ratios in compound

15. Chemical Formulas
H2O
2 Hydrogen; 1 Oxygen
2H2O
4 Hydrogen; 2 Oxygen

16. Mixture
Mixture – 2 or more substances put together that don’t form a compound

17. Compounds Compound – substance made of 2 or more different elements
Chemically combine
Example – Water or H2O
Elements hydrogen (2 atoms) and oxygen (1 atom) combine to form water

19. Molecules
Molecules – smallest unit of a substance that behaves like the substance
More than one atom together
Same or different atoms

20. Chemical Formula
Chemical formula – shows how many atoms of each element are in a substance
# in front of letter = # of molecules
# in subscript = # of atoms
3C12H22O11
3 molecules of sugar
Each molecule contains given # of atoms

21. Pure Substances
Materials are made of a pure substance or a mixture of substances.
Pure substance - matter that has a fixed composition and definite properties
Elements or compounds

22. Mixtures
Mixture – combination of 2 or more substances that are not chemically combined
Example - Pizza

24. Heterogeneous Mixture
Heterogeneous mixture – substances aren’t mixed uniformly and aren’t distributed evenly
Flour mixed with water

25. Heterogeneous Mixtures

26. Homogeneous Mixtures
Homogeneous mixture - contains two or more gaseous, liquid, or solid substances blended evenly throughout.