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SCI220-01

Week 2

QuestionAnswer
AB + CD → AD + CB is an example of a(n) _____ reaction. Exchange
Which of the following represents properties of water? High specific heat High heat of vaporization Strong polarity
Substances that accept hydrogen ions are called: Bases
Which of the following elements is least likely to combine with another element? Helium
The atomic number of carbon is 6. How many unpaired electrons are in its outer shell? Four
Atomic mass is determined by the number of: Protons and Neutrons
The most abundant and important compound(s) in the body is(are): Water
An ionic bond is formed by: A positive and a negative ion attracting each other.
The formation of sucrose involves the removal of a molecule of water. This is called: Dehydration synthesis.
The kind of element is determined by the number of: Protons
The approximate pH of gastric fluid is: 2
The study of metabolism includes examination of: Catabolism. Anabolism. ATP requirements.
An isotope of an element contains different numbers of ____ from other atoms of the same element. Neutrons
Which of the following is not one of the major elements present in the human body? Zinc
Approximately what percentage of the body weight of an adult female is water? 60%
A negatively charged subatomic particle that moves around the nucleus is a(n): Electron
An example of a catabolic process is: Hydrolysis
Acids: Are proton donors. Taste sour. Release hydrogen ions in an aqueous solution.
As the concentration of hydrogen ions (H+) increases, the: Solution becomes more acidic.
When atoms combine, they may gain, lose, or share: Electrons
Which of the following bonds are the weakest? Hydrogen
Carbon has an atomic number of 6. The number of electrons found in the first shell is: Two
The study of metabolism includes examination of: Catabolism. Anabolism. ATP requirements.
The hydrogen isotope tritium consists of: One proton and two neutrons.
Which of the following represents a trace element in the body? Iron
A magnesium atom has an atomic number of 12, an atomic mass of 25, and a +2 charge. This atom would contain _____ protons, _____ neutrons, and _____ electrons. 12; 13; 10
A solution that contains a greater concentration of hydroxide ions (OH–) than hydrogen ions (H+) is a(n) _____ solution. Alkaline (basic)
An example of an element would be: Ne
The octet rule refers to the Stability of the atom when there are eight electrons in the outermost energy level.
The type of reaction in which substances are combined to form more complex substances is called a(n) _____ reaction. Synthesis
Created by: mecy1980
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