Vocab

1. Vocab

2. Agenda for Monday • Quizzes • Examples • Matter Review • You Tube – separating mixtures • Matter Quick Review (in class) • Worksheet packets due Wed.

3. Distillation– boil liquid to a vapor than then condense back to a liquid somewhere else • d

4. Filter

5. VocabChemical Symbols • H: Hydrogen • He: Helium • Li: Lithium • Be: Beryllium • B: Boron • C: Carbon • N: Nitrogen • O: Oxygen • F: Fluorine • Ne: Neon

6. Matter and Change Chapter Objectives At the end of this chapter, the student will be able to 1.  distinguish between physical and chemical properties.2.  list examples of physical properties.3.  describe the 3 states of matter (gas, liquid, solid) 4.  describe physical and chemical changes.5.  identify the signs of a chemical change/reaction.6.  categorize a sample of matter as a substance or a mixture.7.  distinguish between homogeneous and heterogeneous mixtures.8.  describe ways of separating mixtures.9.  explain the differences between elements and compounds.10. identify the chemical symobls of elements and name elements from their symbols.11.  apply the law of conservation of mass to chemical reactions.

7. Key Terms for Ch.2 • chemical changechemical propertychemical reactionchemica symbolcompounddistillationelementextensive propertyfiltrationgasheterogeneous mixturehomogeneous mixtureintensive propertylaw of conservation of mass

8. Key Terms Ch.2 Cont. • liquidmassmixturephasephysical changephysical propertyprecipitateproductreactantsubstancesolidsolutionvaporvolume

9. Vocab Law of Conservation of Mass: 1. Mass can not be gained or lost in a chemical reaction. 2. Matter can not be created or destroyed. 3. Elements combine and recombine, but are not created or destroyed in chemical reactions.

10. VocabChemistry Language • Molarity (M): The concentration of solute in a solution • Cu = ? • HNO3 = Nitric Acid • H2O = ? • NaOH = Sodium Hydroxide • H2SO4 = Sulfuric Acid • Zn = ?

11. Vocab • Mixture – A physical blend of 2 or more components. • Heterogeneous Mixture – A mixture in which the composition is not uniform throughout. • Homogeneous Mixture – A mixture in which the composition is uniform throughout.

12. Vocab • Element – Simplest form of matter that has a unique set of properties. • Compound– Substance that can be separated into simpler substances only by chemical means.

13. Vocab • Filtration – The process that separates a solid from a liquid in a heterogeneous mixture. Ex.: Colander or coffee filter • Distillation– A process used to separate dissolved solids from a liquid, which is boiled to produce a vapor that is then condensed into a liquid.

14. Vocab Paper Chromatography - a technique often used by chemists to separate components of a mixture.

15. Paper Chromatography In paper chromatography a small drop of the mixture is applied near one end of a strip of chromatography paper. The end of the paper is then dipped into a developing solvent, often called the mobile phase, which flows up along the paper by capillary action. As the developing solvent flows up the paper, it can carry along the components of the mixture.

16. VOCAB Conservation of Mass In any physical change or chemical reaction, mass is conserved. Mass is neither created nor destroyed.-

17. Vocab: • Extensive Property – A property that depends on the amount of matter in a sample. (how many cookies or how big the cookie is) • Intensive Property – A property that depends on the type of matter in a sample, not the amount. (Oreo vs. chocolate chip)

18. Vocab • Precipitate - A solid that forms and settles out of a liquid mixture.