Thursday, May 1, 2008
Thurs-Day 1
Bio - due by TUESDAY, outline the text sections 15.1 and 15.2 (two separate hw credits).
Today we further discussed the modern Theory of Evolution; we saw how evolution in species can be measured/defined as a change in the percentage/frequency of the various alleles in the GENE POOL of a species population. The change in allele frequency is caused by natural selection by the environment for those members of a population whose alleles give them a phenotype that is advantageous to their survival and reproduction in their environment. Thus, the surviving/reproducing members will pass on these advantageous alleles to their offspring, which will have a higher percentage of those alleles in the population.
Chem 7- we began our acid-base unit by discussing some characteristics of acids. We saw that acids are sour, react with ACTIVE metals to form aqueous salt solutions and hydrogen gas, and that acids are molecules that ionize in water to form H3O+, hydronium ion, which is often abbreviated as H+, the aqueous hydrogen ion.
Chem 8/9-we began our acid-base unit by discussing some characteristics of acids. We saw that acids are sour, react with ACTIVE metals to form aqueous salt solutions and hydrogen gas, and that acids are molecules that ionize in water to form H3O+, hydronium ion, which is often abbreviated as H+, the aqueous hydrogen ion.
We then did an activity in which we saw the color ranges of the various acid-base indicators throughout the pH scale.
Today we further discussed the modern Theory of Evolution; we saw how evolution in species can be measured/defined as a change in the percentage/frequency of the various alleles in the GENE POOL of a species population. The change in allele frequency is caused by natural selection by the environment for those members of a population whose alleles give them a phenotype that is advantageous to their survival and reproduction in their environment. Thus, the surviving/reproducing members will pass on these advantageous alleles to their offspring, which will have a higher percentage of those alleles in the population.
Chem 7- we began our acid-base unit by discussing some characteristics of acids. We saw that acids are sour, react with ACTIVE metals to form aqueous salt solutions and hydrogen gas, and that acids are molecules that ionize in water to form H3O+, hydronium ion, which is often abbreviated as H+, the aqueous hydrogen ion.
Chem 8/9-we began our acid-base unit by discussing some characteristics of acids. We saw that acids are sour, react with ACTIVE metals to form aqueous salt solutions and hydrogen gas, and that acids are molecules that ionize in water to form H3O+, hydronium ion, which is often abbreviated as H+, the aqueous hydrogen ion.
We then did an activity in which we saw the color ranges of the various acid-base indicators throughout the pH scale.
# posted by C @ 12:09 PM 
