Lab Practical 1

Question 1

Brownian Motion

Answer 1

• Brownian motion is the movement of particles as a result of molecular vibration from thermal energy. Osmosis and diffusion occurs as a result of the vibrations

Question 2

Iodine and starch lab

Answer 2

• Iodine diffused into starch bag because the molecules were smaller than starch (I2 vs C6H12O6)x1000
  
  • Iodine should have diffused out of the bag and turned the starch liquid black in the other cup

Question 3

sucrose and water lab

Answer 3

• Sucrose solutions- gained mass in hypotonic solutions, lost mass in hypertonic solution, stayed the same in the isotonic solution.
  
  • Example of blood cells

Question 4

examining blood cells with different solutions lab

Answer 4

• Hypertonic= shriveled cells
  
  • Isotonic= no change
  • Hypotonic= enlarged cells, possibly bursting

Question 5

Taxonomy classification of animals

Answer 5

Domains>Kingdom>phylum>class>order>family>genus>species