harry

Question 1

any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose.

Answer 1

carbohydrate

Question 2

any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents.

Answer 2

lipid

Question 3

any of a class of nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids and are an essential part of all living organisms, especially as structural components of body tissues such as muscle, hair, collagen, etc., and as enzymes and antibodies.

Answer 3

proteins

Question 4

a complex organic substance present in living cells, especially DNA or RNA, whose molecules consist of many nucleotides linked in a long chain.

Answer 4

Nucleic acid

Question 5

a part or aspect of something abstract, especially one that is essential or characteristic.

Answer 5

elements

Question 6

a thing that is composed of two or more separate elements

Answer 6

compounds

Question 7

any member of a large class of gaseous, liquid, or solid chemical compounds whose molecules contain carbon. Carbonates, simple oxides of carbon, and cyanide molecules do have carbon, but they are not regarded as organic.

Answer 7

organic compounds

Question 8

an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Answer 8

ions

Question 9

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

Answer 9

isotopes

Question 10

a thing used to tie something or to fasten things together.

Answer 10

chemical bonds

Question 11

a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

Answer 11

chemical reactions

Question 12

a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.

Answer 12

enzyme

Question 13

the chemical processes that occur within a living organism in order to maintain life.

Answer 13

metabolism

Question 14

the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.

Answer 14

homeostasis

Question 15

a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component

Answer 15

solution

Question 16

a molecule or other entity that can donate a proton or accept an electron pair in reactions

Answer 16

acid

Question 17

a conceptual structure or entity on which something draws or depends.

Answer 17

base

Question 18

A measure of acidity or alkalinity of water soluble substances

Answer 18

ph scale

Question 19

the mass of an atom of a chemical element expressed in atomic mass units.

Answer 19

Atomic mass

Question 20

the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Answer 20

Atomic Number

Question 21

protons, neutron, and electrons.

Answer 21

Parts of an atom

Question 22

is a process where one or more substances are altered into one or more new and different substances.

Answer 22

chemical reaction

Question 23

form of matter is altered but one substance is not transformed into another.

Answer 23

physical change

Question 24

any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays.

Answer 24

radioactive isotopes

Question 25

has four measurable properties that are commonly used to characterize its chemistry.

Answer 25

water