Anatomy Week 2 Word Scramble

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Question	Answer
As the concentration of hydroxide ions (OH–) increases, the:	solution becomes more basic, pH rises.
An element that contains the same number of protons but different numbers of neutrons is called a(n)	isotope.
A substance that cannot be broken down or decomposed into two or more different substances is called a(n)	element.
A chemical bond formed by the sharing of one or more pairs of electrons between the outer shells of two atoms is called a(n) _____ bond.	covalent
Chemical bonds formed by the sharing of electrons are called:	covalent.
Acids	release hydrogen ions.
The water molecule has two distinct ends, each with a partial electrical charge. Because of this structure, water is said to be	polar.
As a result of which reaction during catabolism is a water molecule added to break a larger compound into smaller subunits?	hydrolysis
Electrolytes are:	called cations if they have a positive charge.
The elements carbon, hydrogen, oxygen, and nitrogen make up which percentage of the human body?	96%
The type of chemical reaction most likely to require energy is a(n) _____ reaction.	synthesis
Atoms with fewer than eight electrons in the outer energy level will attempt to lose, gain, or share electrons with other atoms to achieve stability. This tendency is called the	octet rule.
Salts:	can form as the result of a chemical reaction between acids and bases, are electrolytes, will form crystals if the water is removed.
The element oxygen has an atomic number of 8, which means it contains:	eight protons.
Ionic bonds are chemical bonds formed by the:	transfer of electrons from one atom to another.
An atom can be described as chemically inert if its outermost electron shell contains _____ electrons.	eight
Acids, bases, and salts belong to a large group of compounds called	electrolytes.
The reaction between hydrogen and oxygen needed to form water is an example of a:	synthesis reaction.
The atomic number tells you the	number of protons in the nucleus.
Which subatomic particles carry a charge?	Protons and electrons
What term is used to describe all of the chemical reactions that occur in body cells?	metabolism
A molecule that is polar:	can form a hydrogen bond, has an unequal charge
What decomposition reaction requires the addition of a water molecule to break a bond?	hydrolysis
A weak acid:	dissociates very little in solution.
For sodium to transform from a neutral atom to a positive ion, it must:	lose an electron
As the concentration of hydrogen ions increases, the pH goes _____, and the solution becomes more _____.	down; acidic
Which type of chemical reaction results in the breakdown of a complex substance into two or more simpler substances?	decomposition reaction
Which of the following is not a subatomic particle?	Radon
Hydrolysis _____ a water molecule.	breaks down compounds by adding
A force holding two atoms together is a(n)	chemical bond.
Hydrogen bonds result from unequal charge distribution on a molecule. Such molecules are said to be	polar.
The most abundant element essential to life is	carbon.
The total number of electrons in a neutral atom equals the number of:	protons in its nucleus.
As the concentration of hydrogen ions (H+) increases, the:	solution becomes more acidic.
The type of reaction in which substances are combined to form more complex substances is called a(n) _____ reaction.	synthesis
The kind of element is determined by the number of:	protons.
An example of a catabolic process is:	hydrolysis.
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
Which of the following elements is least likely to combine with another element?	Helium
Which of the following is not one of the major elements present in the human body?	Zinc
Carbon has an atomic number of 6. The number of electrons found in the first shell is:	two
An example of a catabolic process is:	hydrolysis.
An ionic bond is formed by:	a positive and a negative ion attracting each other.
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.
The study of metabolism includes examination of:	catabolism, anabolism, ATP requirements.
The approximate pH of gastric fluid is:	2.
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.
Approximately what percentage of the body weight of an adult is water?	50%
In the presence of a base, red litmus paper will:	turn blue.
Atomic mass is determined by the number of:	protons and neutrons.
AB + CD → AD + CB is an example of a(n) _____ reaction.	exchange
The most abundant and important compound(s) in the body is(are):	water.
Acids:	are proton donors, taste sour, release hydrogen ions in an aqueous solution.
A negatively charged subatomic particle that moves around the nucleus is a(n):	electron.
Which of the following represents a trace element in the body?	Iron
Substances that accept hydrogen ions are called:	bases.
The atomic number of carbon is 6. How many unpaired electrons are in its outer shell?	Four
The hydrogen isotope tritium consists of:	one proton and two neutrons
Which of the following represents properties of water?	High specific heat, High heat of vaporization, Strong polarity,
Which of the following bonds are the weakest?	Hydrogen
The octet rule refers to the:	stability of the atom when there are eight electrons in the outermost energy level.
An isotope of an element contains different numbers of ____ from other atoms of the same element.	neutrons

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