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Sarah Shimkin
Anatomy Week 2 ACTIVITY
| Question | Answer |
|---|---|
| What decomposition reaction requires the addition of a water molecule to break a bond? A. dehydration synthesis B. hydrolysis C. catalysis D. disulfide linkage | B |
| Hydrolysis ___ a water molecule. A. joins compounds by removing B. breaks down compounds by removing C. joins compounds by adding D. breaks down compounds by adding | D |
| A force holding 2 atoms together is a(n): A. isotope B. chemical bond C. energy shell D. isomer | B |
| The atomic number tells you the: A. number of protons in the nucleus B. number of neutrons in the nucleus C. number of electrons D. weight of the atom | A |
| Chemical bonds formed by the sharing of electrons are called: A. ionic B. covalent C. hydrogen D. isotopic | B |
| Acids: A. release hydrogen ions B. have a pH above 7 C. take up hydroxyl ions D. release hydrogen ions and have a pH above 7 | A |
| A weak acid: A. dissociates very little in solution B. dissociates almost completely in solution C. will cause pH of a solution to rise above 7 D. does both B and C | A |
| What term is used to describe all of the chemical reactions that occur in body cells? A. catabolism B. anabolism C. metabolism D. morphism | C |
| Salts: A. can form as a result of a chemical reaction between acids and bases B. are electrolytes C. will form crystals if the water is removed D. all of the above | D |
| As the concentration of hydroxide ions increases, the: A. solution becomes more basic B. solution becomes more acidic C. pH rises D. both A and C are correct | D |
| The elements carbon, hydrogen, oxygen, and nitrogen make up which percentage of the human body? A. 50% B. 69% C. 78% D. 96% | D |
| A substance that cannot be broken down or decomposed into 2 or more different substances is called a(n): A. atom B. element C. compound D. isotope | B |
| Electrolytes are: A. organic compounds B. called cations if they have a negative charge C. called cations if they have a positive charge D. both A and B | C |
| As the concentration of hydrogen ions increases, the pH goes ___ and the solution becomes more ____ A. down; acidic B. down; alkaline C. up; acidic D. up; alkaline | A |
| Which type of chemical reaction results in the breakdown of a complex substance into 2 or more simpler substances? A. exchange reaction B. synthesis reaction C. reversible reaction D. decomposition reaction | D |
| The water molecule has 2 distinct ends, each with a partial electric charge. Because of this structure, water is said to be: A. liquid B. solvent C. neutralized D. polar | D |
| The total number of electrons in a neutral atom equals the number of: A. neutrons orbiting the atom B. protons plus the number of neutrons in its nucleus C. protons in its nucleus D. ions in its nucleus | C |
| Which of the following is not a subatomic particle? A. proton B. electron C. radon D. neutron | C |
| The most abundant element essential to life is: A. carbon B. oxygen C. hydrogen D. nitrogen | A |
| Ionic bonds are chemical bonds formed by the: A. sharing of electrons between molecules B. donation of protons from one atom to another C. transfer of electrons from one atom to another D. acceptance of neutrons from one atom by another | C |
| Hydrogen bonds result from an unequal charge distribution on a molecule. Such molecules are said to be: A. nonpolar B. polar C. covalent D. ionic | B |
| A chemical bond formed by the sharing of 1 or more pairs of electrons between the outer shells of 2 atoms is called a ___bond. A. ionic B. hydrogen C. covalent D. none of the above | C |
| An element that contains the same number of protons but different numbers of neutrons is called a(n): A. ion B. isomer C. isotope D. bond | C |
| The reaction between hydrogen and oxygen needed to form water is an example of a: A. hydrogen bond B. synthesis reaction C. decomposition reaction D. none of the above | B |
| Which subatomic particles carry a charge? A. protons and neutrons B. neutrons and electrons C. protons and electrons D. neutrons only | C |
| Atoms with fewer than 8 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: A. atomic rule B. octet rule C. electrovalent principle D. tertiary rule | B |
| The type of chemical reaction most likely to require energy is a(n) ___ reaction. A. synthesis B. decomposition C. exchange D. all of the above reactions are equally likely to require energy | A |
| An atom can be described as chemically inert if its outermost electron shell contains ___ electrons. A. 8 B. 9 C. 2 D. both B and C | A |
| As a result of which reaction during catabolism is a water molecule added to break a larger compound into smaller subunits? A. hydrolysis B. dehydration synthesis C. anabolism D. exchange reaction | A |
| For sodium to transform from a neutral atom to a positive ion, it must: A. gain an electron B. gain a proton C. lose an electron D. lose a proton | C |
| The element oxygen has an atomic number of 8, which means it contains: A. 4 protons and 4 neutrons B. 8 protons C. 8 neutrons D. 4 protons and 4 electrons | B |
| Acids, bases, and salts belong to a large group of compounds called: A. polar molecules B. organic compounds C. electrolytes D. nonelectrolytes | C |
| A molecule that is polar: A. can form a hydrogen bond B. must be ionic C. has an unequal charge D. both A and C | D |
Created by:
sshimkin