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Ch 6 Study Guide

In a water molecule, electrons are shared equally between the hydrogen atoms and oxygen atom. False
The attration of opposite charges between hydrogen and oxygen forms a weak oxygen bond. False.
Becuase of its polarity, water can move from the roots of a plants up to its leaves. True
Water changes temperature easily. False.
Unlike most substances, water expands when it freezes. True.
What do all objects in motion have? Kinetic energy/
Who was the first scientist to observe evidence of the random motion of molecules? Brown.
What is the net movement of particles from an area of higher cncentration to an area of lower concentration? Diffusion.
What is it called when a few drops of colored corn syrup are added to a beaker of pure conrn syrup, the color will do it what? Start a diffuse.
Diffusion can be accelerated by what? Increasing the temperature.
When materials pass into and out of a cell at equal rates, there is no net change in concerntration inside the cell. The cell is in a state of what? Dynamic equilibrium.
What is the difference in concentration of a substance across space is called what? Concentration gradient
Diffusion occurs because of what? Random movement of particles.
Created by: jazznsoul64