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Catalyst (4 min)

Catalyst (4 min). Answer the following question on your catalyst sheet: Determine whether the following images are elements, compounds or mixtures:. 1. 2. 3. Catalyst Discussion. Determine whether the following images are elements, compounds or mixtures:. 1. 2. 3. MIXTURE. COMPOUND.

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Catalyst (4 min)

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  1. Catalyst (4 min) Answer the following question on your catalyst sheet: Determine whether the following images are elements, compounds or mixtures: 1 2 3

  2. Catalyst Discussion Determine whether the following images are elements, compounds or mixtures: 1 2 3 MIXTURE COMPOUND ELEMENT

  3. Observations and Inferences 9/13/10 Catalyst Chemistry and Matter Observations

  4. Cornell Notes

  5. Cornell Notes Ms. Akagi Intro to Chemistry 9/13/09 Chemistry • Solid • Liquid • Gas States of Matter • Solid • Liquid • Gas

  6. What do we do in chemistry? • We ask questions • We observe what’s going on around us • We make inferences and conclusions from our observations! Most every problem can be solved if you take the proper steps and if you are as detailed as possible

  7. Observation That almond is brown and has a grooved texture • A note or description of an object or occurrence • FACTS! Not opinions! • More observations = more information = more we can learn

  8. Inference That almond looks delicious • A guess about an object or outcome based on your observations • This can be a scientific opinion

  9. Practice: On your notes (NOT OUT LOUD), quickly write down whether the following examples are OBSERVATIONS or INFERENCES • The leaves are green • I think it’s spring • The Cubs scored 2 runs Observation Inference Observation

  10. Qualitative Observations • Observations in which we use our senses (sight, smell, touch, taste, hearing, etc) • Examples: • the sky is blue in color • the water tasted salty • The fire made a crackling sound

  11. Quantitative Observations • Observations that are measurable (have numbers) • We use tools to get these measurements! • Rulers (2 ft long) • Thermometers (34˚ C) • Scales (25 lbs) My hand is 4 inches wide

  12. Practice: On your notes (NOT OUT LOUD), quickly write down whether the following observations are QUANTITATIVE or QUALITATIVE • The apple has brown spots • There are 5 apples on the counter • Jose got 80% on the quiz! Qual. Quant. Quant.

  13. Homework (due tomorrow) • Finish the worksheet • Select an object at home and describe that object in a paragraph (complete sentences!) • Write at least 4 qualitative observations • Write at least 4 quantitative observations • At least 8 observations total! • Note: DO NOT indicate which observations are qualitative or which are quantitative • If someone can guess your object, you get extra credit! So make sure you are detailed in your descriptions!

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