nightingale college anatomy week2

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. Answer : 12; 13; 10

12: 13:10

Carbon has an atomic number of 6. The number of electrons found in the first shell is: 2

2

The approximate pH of gastric fluid is

2

The atomic number of carbon is 6. How many unpaired electrons are in its outer shell?

4

Approximately what percentage of the body weight of an adult female is water?

50%

Which of the following represents properties of water?

High specific heat High heat of vaporization Strong polarity Answer : All of the above

An example of an element would be:

Ne

An ionic bond is formed by

a positive and a negative ion attracting each other.

A solution that contains a greater concentration of hydroxide ions (OH-) than hydrogen ions (H+) is a(n) _____ solution

alkaline (basic)

The study of metabolism includes examination of?

all of the above

Acids

are proton donors. taste sour. release hydrogen ions in an aqueous solution. Answer : All of the above are true of acids.

Substances that accept hydrogen ions are called

base

The study of metabolism includes examination of

catabolism anabolism. ATP requirements. Answer : all of the above.

The process of the digestion of food is an example of which type of reaction?

decomposition

The formation of sucrose involves the removal of a molecule of water. This is called

dehydration synthesis

When atoms combine, they may gain, lose, or share

electrons

A negatively charged subatomic particle that moves around the nucleus is a(n)

eletrons

AB + CD → AD + CB is an example of a(n) _____ reaction.

exchange

Which of the following elements is least likely to combine with another element?

helium

Which of the following bonds are the weakest?

hydrogen

A example of a catabolic process is

hydrolysis

An example of a catabolic process is

hydrolysis

solution becomes more 30. Which of the following represents a trace element in the body?

iron

An isotope of an element contains different numbers of ____ from other atoms of the same element:

neutrons

The hydrogen isotope tritium consists of

one proton and two neutrons.

The kind of element is determined by the number of

protons

Atomic mass is determined by the number of

protons and neutrons.

As the concentration of hydrogen ions (H+) increases, the

solution becomes more acidic

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

In the presence of a base, red litmus paper will

trun blue

The most abundant and important compound(s) in the body is(are):

water

Which of the following is not one of the major elements present in the human body?

zinc