BIOLOGY 1A03 Chapter Notes - Chapter 25-49: Covalent Bond, Atomic Nucleus, Chemical Polarity
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1. (TCO 1) Control subjects in a double-blindtest of a new drug are (Points : 4) informed of what drug they aregetting.
informed of what drug they aregetting but their private physicians are not.
given larger doses of thedrug.
infected with a differentdisease than the experimental subjects.
not given the experimentaldrug but are otherwise treated the same as the experimentalsubjects.
hypothesis experiment theory All of the above |
theories statistical tests correlations predictions |
A group is a column on theperiodic table. The elements in each periodhave similar chemical properties. The A groups contain therepresentative elements. The B groups contain thetransition elements. |
Add up the number of protonsand neutrons in the atom. It is equal to the number ofprotons in the atom. It is equal to the number ofneutrons in the atom. Find the net electrical chargeof the atom. |
20 24 44 58 |
Protons and electrons Protons and neutrons Only electrons Only protons |
Four One Eight Three |
3.01 |
How big is an average eukaryotic cell?
20 nm | |
20 µm |
20 cm | |
20 mm |
How big is an average protein?
2 cm | |
2 nm |
2 µm | |
2 mm |
What type of energy is light?
Potential energy | |
Electromagnetic energy |
Kinetic energy | |
Magnetic energy |
Electrical energy |
What property of light changes to make the different colors of visible light?
The speed | |
The wavelength |
The magnitude | |
The direction |
How many electrons does each carbon atom have?
2 | |
6 |
12 |
How many electrons does each gold atom have?
197 | |
118 |
79 |
Where are electrons in an atom?
Orbitals | |
Nucleus |
How does an electron get to a higher orbital?
Release energy | |
Absorb energy |
How does an electron get to a lower orbital?
Release energy | |
Absorb energy |
What is a photon?
A âpacketâ of light | |
A positively charged subatomic particle, found in the nucleus |
A torpedo | |
An electrically neutral subatomic particle, found in the nucleus |
How are wavelength and frequency related?
The shorter the wavelength, the higher the frequency | |
The shorter the wavelength, the lower the frequency |
How are electromagnetic energy and wavelength related?
The shorter the wavelength, the lower the energy | |
The shorter the wavelength, the higher the energy |