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Biology Finals part screw this
oh dear god i hate finals
41
Biology
9th Grade
12/14/2013

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Term
Scientific Method Steps
Definition

1.Question

2.Observations

3.Hypothesis

4.Experiment

5.Analysis

6.Conclusion

Term
Experiment
Definition
You need to list materials,procedure, and a data table with qualitative and quantitative qualities
Term
Dependent vs Independent Variable
Definition

Independent variable is something we can control and what we change each time in an experiment. Dependent variable is the outcome and something we can't change. Independent = input

dependent = output

Term
Quantitative vs Qualitative
Definition

Qualitative deals with descriptions and words (example; the drink is a light blue with foam on top)

Quantitative deals with numbers and facts (example; the drink is 87 degrees fahrenheit and is 16 ounces)

Term
Control Group
Definition
Control group is when your doing an experiment it's the group without an independent variable. (example; an experiment testing if more people can taste red or blue food coloring in their water, the control group would just have plain water)
Term
Analysis
Definition
needs a graph of some sort (bar, chart, line, pie, etc)
Term

Conclusion

(REE PE PA)

Definition

REE=Results, Evidence, and Explanation

PE= Possible Error

PA=Practical Applications

Term
Atom
Definition
the smallest ammount of an element while still keeping it's elemental properties
Term
Element
Definition
The building blocks of everything. Periodic table lists them all
Term
Molecule
Definition
2 or more atoms of the same element chemicaly bonded (example; oxygen=02
Term
Compound
Definition
2 or more atoms of different and same elements bonded (example; water=h20
Term
Polarity
Definition
having positive and negative charges (example; H20 0xygen is has a negative charge but Hydrgoen has positive)
Term
Hydrogen Bond
Definition
chemical bond where hydrogen atom of one molecule is attracted to an electronegative atom (usually FNO) of another molecule
Term
Surface Tension
Definition
When you drop water on a penny it forms a dome because the hydrogen bonds are so strong and because there's nothing else to bond with so it forms a "skin" or dome on top so it doesn't spill over
Term
Adhesion
Definition
the bonding of different elements
Term
Cohesion
Definition
bonding of the same element
Term
Chemical Reaction
Definition
when atoms of same or different elements rearrange themselves to form a new substance (usually absorbing or giving off heat in the process)
Term
Acid
Definition
somethign sour in taste and below a 7 on the pH scale
Term
base
Definition
something higher than a 7 on the pH scale
Term
pH scale
Definition
a scale measuring the acidity or alkalinity of a solution going from 0 (acid) to 14 (base)
Term
Buffers
Definition
something to keep the acidity of a solution from changing
Term
Macromolecules
Definition
a very large molecule (like a protein) consisting of smaller molecule
Term
Polymer
Definition
a large molecule involving repeating units called monomers
Term
Monomer
Definition
a simple molecule that can make up a polymer
Term
Proteins
Definition
made of amino acids
Term
Amino Acids
Definition
Made of CHON carbon, hydrogen, oxygen, nitrogen
Term
Enzyme
Definition
a protein that increases the rate of a chemical reaction
Term
Carbohydrates
Definition
long chains of CHO carbon hydrogen and oxygen. provide energy and if excess they are fat
Term
Monosaccharide and Polysaccharide
Definition
P= a group of complex carbohydrates that decompose using hydrolysis into M
Term
Lipid
Definition
a group of organic compounds such as fat
Term
Nucleic Acids
Definition
organic molecule found in the nuclei of cells (DNA or RNA)
Term
Nucleotides
Definition
basic unit of nucleic acids
Term
Describe the structure of an atom in terms of protons, neutrons, and electrons.
Definition
Protons and Neutrons are in the center forming the nucleus while the electrons orbit around
Term
Identify the mot common elements found in molecules
Definition

CHNOPS

CARBON

HYDROGEN

NITROGEN

OXYGEN

PHOSPHOROUS

SULFUR

Term
What is stored in the chemical bonds of molecules
Definition
Energy
Term
Why is water important for living things
Definition
breaks down a lot of stuff
Term
Explain how water is adhesive and cohesive
Definition
The hydrogen molecules bond to them self and they bond to the oxygen atom
Term
Give 3 examples of bases and know where it is on the pH scale
Definition

Blood 7.45

Egg Whites 8

Baking soda 9

Term
3 example of Acids
Definition

Vinegar 3

Rainwater 5

Milk 6

Term
Why is it important to have buffers in our body
Definition
otherwise we would have imbalances
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