1. Chemistry Review

2. Atoms/Elements/Molecules What is the difference between an atom and an element? What is the difference between an element and a compound/molecule? What is an example of an element?

3. Matter What are the 3 states of matter? SOLID, LIQUID, GAS Animation

4. Phase Changes

5. Properties What is a property? Describes, talks about it’s ability to… Can be physical or chemical Physical property: characteristic/ability of a substance without changing it to something new Chemical property: characteristic of a substance that does has the ability to turn into something new

6. Physical & Chemical Characteristics PHYSICALCHEMICAL Changes its appearance physically Changes what it is made up of (can change the atoms to make a new thing); reacts

7. Examples of Properties Front Desk: PHYSICAL PROPERTIESCHEMICAL PROPERTIES Color Flammable Hardness Could change color if burned Ability to break Melting point of plastic Not flexible Not magnetic Texture

8. 9/11 – notes stop here

9. 9/17 Notes startChanges When it actually changes Physical: changes size, shape, color but its still the same thing Chemical: changes what it completely is, chemical reactions

10. Examples of changes Tearing paper Burning paper Breaking wood Campfire Mixing kool aid Cooking a cake Physical change Chemical change

11. Property vs. Change Property = description or could change in the future Change = change 5 evidences of a chemical change PCOGT – “Pirates can obtain great treasures” – Precipitate (solid forms) – Color change – Odor(smell) – Gas forms – Temperature change – Evidence of a chemical change Evidence of a chemical change – http://resources.educ.queensu.ca/science/main/concept/gen/g09/N.%20Sabet/precipitation.jpg

12. Property or Change? Boiling point 2 different liquids mix  bubbles Food coloring in water Burning an egg It has a yellow color It produced a smell Property Change

13. Which of the following is an example of a chemical property of water? – A. Boils at 100 C – B. Is transparent – C. Has no odor – D. Reacts with calcium Is it still water (H2O) Transparent = see through/clear No smell Reacts = chemical reaction

14. Which of the following is an example of a physical property of hydrogen? It A. Is less dense than air B. Reacts with oxygen C. Is highly flammable D. Forms hydrochloric acid PHYSICAL PROPERTY

17. Energy that can be given off in a chemical reaction 3 different kinds Substance gets warmer? HEAT ENERGY Changes color? LIGHT ENERGY Creates a noise? SOUND ENERGY

19. Common Chemical reactions Respiration Rust Photosynthesis Combustion: 2 chemicals burning

20. How can you speed up a chemical reaction? Add heat Stir Crush

21. Don’t freak out Take your time Use tools Read the entire question Look at the graphs and tables