BIOB 160 Lab 1: Chemical Formulas and Structures
Electrons are arranged in energy levels. How many are in the fourth?
1
How many other atoms can Hydrogen bond to?
1
Each ocular lens has a magnification of what on a compound microscope?
10X
What is the magnification on the low power and high power lens on a compound microscope?
10x and 40x
What is the magnification range of the dissecting microscope?
10x to 40x
When an electron has one electron in the energy level and has 19 protons and 19 electrons, what is the ending result of electrons?
18
Electrons are arranged in energy levels. How many are in the first?
2
Helium has 2 electrons and how many protons?
2
One oxygen atom can bond to how many atoms of hydrogen?
2
How many objective lenses are there on a compound microscope?
3
What is model 3 made of?
3 atoms of hydrogen, One nitrogen
What is the range of magnification with a compound microscope?
40x to 400x
Carbon has 6 protons and how many electrons?
6
Electrons are arranged in energy levels. How many are in the second?
8
Electrons are arranged in energy levels. How many are in the third?
8
How does the aldehyde group differ from the carboxyl group?
Aldehyde has one less Oxygen than a carboxyl.
Which element is not present in the three compounds?
Carbon
The four functional groups are what?
Carboxyl in organic acids, amino and carboxyl in amino acids, carbonyl and hydroxyl in sugars
Which cell part gives the leaf its color?
Chloroplasts
Which microscope has high magnification?
Compound
Which microscope is used for looking through a specimen?
Compound
Which microscope is used for smaller objects?
Compound
What is a carboxyl group?
Contains C, O, and OH .... COOH
The wooden peg represented what?
Covalent bond holding the atoms together
In general, what is the shape of the cells in the elodea?
Cyboidal, rectangular
As magnification increases, the depth of focus what?
Decreases
Which microscope has low magnification?
Dissecting
Which microscope is for viewing surface features of a specimen?
Dissecting
Which microscope is used for larger objects?
Dissecting
Atoms of elements can accept electrons and what else with electrons?
Donate or Share
What was model 1 a model of?
Hydrogen
Helium in inactive and what?
Inert
When an electron accepts an extra electron, it becomes known as what?
Ion
A charged atom is called a what and has a charge of what?
Ion, +1
When two elements bond together, it is known as what?
Ionic bonding
What is the molecular formula for 3 atoms of hydrogen and one nitrogen?
NH3
What charge does electrons have?
Negative
What charge does neutrons have?
Neutral
Does a dissecting microscope have image inversion?
No
What is a hydroxyl group?
OH
What are compounds that contain carbon called?
Organic compounds
Most elements will react with what making the outermost level full of electrons?
Other atoms
What charge does protons have?
Positive
If an electron goes from 19 protons to 19 electrons, but looses an electron which now results in 18 electrons.... what is the charge and amount of the electron?
Positive, 1
In an atom, what is equal?
Protons and electrons
What three parts does an atom consist of?
Protons, Neutrons and Electrons
What give the cell its cold in the observation of the starfish egg?
The dye
How does a model show that ammonia can form bonds with still more atoms?
The model has space for 5 pegs
Model two represented what?
Two hydrogen atoms and one oxygen model (H2O)
