NSB General Questions
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
In electrochemical cells, what is the most common term for the electrode that acts as the negative electrode?
Cathode
If the electronegativity difference in the bonding atoms is large, what general type of bond is formed?
Ionic
Which of the following molecules has a double covalent bond: W) hydrogen X) oxygen Y) nitrogen Z) methane
Oxygen
Most corticosteroids are synthesized in what specific part of the human body?
Adrenal Cortex
What is the name for the common ocean waves that are not driven by the wind but sustained by the energy they obtained by the sea?
Swells
A hexadecimal number is a numeral system with a radix or a base of what?
16
What is the name for the most malleable and ductile metal which can be dissolved in aqua regia but is unaffected by air and most other reagents?
Gold
What is the molecular formula for the conjugate acid of the following Brønsted-Lowry base: SO4^2–
HSO4–
What is a Bronsted Lowry Acid?
Any molecule that releases hydrogen ions
What is a Bronsted Lowry Base?
Any molecule that accepts hydrogen ions
Define cirrostratus
cloud forming a thin, more or less uniform, semitranslucent layer at high altitude, usually
The lush forest of the Pacific northwest is classified as what type of rain forest?
Temperate
What is the most common term used to describe the velocity of an object at any one discrete moment along its path?
INSTANTANEOUS VELOCITY
What are leptons?
Any of a family of elementary particles that interact through the weak force and do not participate in the strong force.
What lepton was the first to be discovered?
electron
A beaker of concentrated aqueous ammonia is placed next to a beaker of concentrated aqueous hydrochloric acid at room temperature. After a short while, a white cloud forms between the beakers. This is a demonstration of: W) effusion X) diffusion Y) efflorescence Z) effervescence
Diffusion
In addition to the “sniff test”, which of the following is a standard laboratory test for a sulfide, such as hydrogen sulfide gas: W) the gas passed over a filter paper soaked in colorless lead nitrate turns the paper brown X) when inserted into a flame, a glowing wooden splint bursts into flames Y) a flame test gives off a deep purple color Z) paper chromatography
W
Rounded to the nearest whole degree, what is the obliquity of the ecliptic?
23
In one cycle of alternating current, 180º is given to the point at what fractional amount of the way through the cycle?
1/2
Which gas that is tested for by ignition in air on contact with a lighted splint to produce a high-pitched “popping” sound?
hydrogen
Which of the following numbers is evenly divisible by both 11 and 3: W) 7791 X) 7553 Y) 5181 Z) 8769
Y
Group 1 cations and group 7 anions combine to form: W) metal alloys X) alkali halides Y) alkaloids Z) organometallic compounds
X (Salts)
What human gland or organ produces tri-iodothyronine (read as: TRY- I-OH-doh-THY-row-neen)?
Thyroid
A child learns that mixing approximately equal amounts of the paint colors orange and green produces brown. This is an example of:
Subtractive Color Synthesis