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Surface Tension: Liquids Stick Together
• To demonstrate adhesion, it is useful to place droplets of liquids on a common surface (desk). • During the lab, the measurements (number of drops on a penny before spilling) may be affected by the cleanliness of the penny. You can either clean all pennies before ... • Food coloring (non-gel food coloring works better)
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Stoichiometry: Baking Soda and Vinegar Reactions
labsci.stanford.eduBaking soda is a powdered chemical compound called sodium bicarbonate, and vinegar includes acetic acid. These 2 components react in solution to form carbon dioxide, water, and
Photosynthesis: How do plants get energy?
labsci.stanford.edusolution. The time it takes for a certain number of leaves to float can be used to calculate the rate of photosynthesis. California Science Content Standards: • 1. Cell Biology: The fundamental life processes of plants and animals depend on a variety of chemical reactions that occur in specialized areas of the organism’s cells. • 1f.
Periodic Table and Atomic Structure: Secret Agent
labsci.stanford.eduAtomic and Molecular Structure: The periodic table displays the elements in increasing atomic number and shows how periodicity of the physical and chemical properties of the elements relates to atomic structure. • 1a. Students know how to relate the position of an element in the periodic table to its atomic number and atomic mass. • 1c.
Nervous System: Reaction Time - Stanford University
labsci.stanford.edu• Reflexes require at least two neurons, or nerve cells, to function. Sensory neurons take in information (input) from the outside world, whereas motor neurons give information (output) to muscles and joints. • Some reflexes are processed in the brain, while others are processed in the spinal cord • The 5 steps of a typical reflex arc are: a.
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CHEM 344 Thin Layer Chromatography
www2.chem.wisc.eduSilica gel is the most common adsorbent used for routine TLC of organic compounds. Table 1. Chromatographic adsorbents. ... your TA will demonstrate. 7. Wipe excess stain from the back of the plate (glass part) and place it on a hot plate for ~20 sec. Allow the solvent to evaporate and look at the spots. 8. Circle the spots in pencil, break out ...
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