2. Chemistry  the study of matter and the way it changes  we try to understand these changes by doing experiments

3. Chemistry  we make a hypothesis based on what we think will happen  we make observations based on what happens in the experiments 2 types of observations: qualitative & quantitative

4. Chemistry  we try to extend our knowledge based on our observations called an inference  we can draw conclusions based on our observations

5. Matter  anything that has mass and takes up space (occupies volume)  consists of virtually everything around us ex: iPod, air, desk, hair, plant, etc.

6. Hypothesis  an educated guess as to what will happen in an experiment  by doing experiments, a hypothesis is either supported (accurate) or unsupported (inaccurate)

7. Qualitative  observation based on words & description  gathered using your 5 senses  state, colour, shape, texture, odour, lustre, …  ex: The substance is a shiny, grey, opaque solid

8. Quantitative  observation based on numbers  mass, melting point, density, volume, …  ex: The substance has a density of 2.7 g/cm3

9. Observation  something you see, hear, touch, taste, or smell

10. Candle Activity

11. Inference  assumption or judgement based on observations that you’ve made ex: you can infer that the flame was hotter than your body temperature, even though you didn’t test it

12. Observation or Inference?  She’s carrying a lot of books. She must be a smart girl.  His car is a rally red 1971 Cuda. The motor is well-maintained.  He has big muscles. He works out a lot.  He overcooked the meat. He’s a bad cook.  He ran the 100m dash in 11.85 seconds. He finished 3 rd in his heat.  She drives a nice car. I bet she’s rich.