Definitions

Question 0

Atomic theory of matter

Answer 0

The idea that all matter is a collection of atoms.

Question 1

Atom

Answer 1

The smallest chunk of a pure chemical element they has chemical properties of that element.

Question 2

Properties of solids

Answer 2

Molecules touching each other, organized in patterns.

High density, resists compression or expansion.

Question 3

Properties of liquids

Answer 3

Molecules touching each other, disorganized.

High density, resists compression or expansion.

Question 4

Properties of gas

Answer 4

Molecules are disorganized and fall apart.
Low density, easily compressed or expanded.
Shape is easy to change/flows.

Question 5

Isoelectronic

Answer 5

Atoms, cations, and anions that have the same number of electrons.

Question 6

Isotope

Answer 6

A sample of an element with atoms that have the same number of neutrons as protons.

Carbon-14, symbol has left superscript

Question 7

Oxoanion

Answer 7

A polyatomic anion made from one central atom that is chemically bonded to oxygen atoms.

Question 8

Spectroscopy

Answer 8

The study of characteristic patterns of absorption if electromagnetic radiation, used to identify substances and provide information about the structure of their molecules.

Question 9

Chromatography

Answer 9

The science of separation of compounds from complex mixtures.

Question 10

Chemotherapy

Answer 10

The use in medicine of substances that are selectively toxic to malignant cells or disease causing viruses or bacteria.

Question 11

Porphyrins

Answer 11

A class of large cyclic molecules fundamentally important to the function of living systems. (eg. green chlorophyll, red hemoglobin)

Question 12

Photodynamic therapy (PDT)

Answer 12

The use of light in medical treatment.

Question 13

Photosensitizers

Answer 13

Substances whose electrons can be excited by absorbing light of appropriate wavelength.

Question 14

Lipoproteins

Answer 14

Molecules that are a combination of proteins and fats responsible for transporting fats through blood.

Question 15

Isomers

Answer 15

Molecules with the same formula but a different arrangement of atoms.

Question 16

Radicle

Answer 16

Part of seed embryo that develops into the primary root.

Question 17

Natural products chemistry

Answer 17

The branch of chemistry that studies compounds produced by living organisms.

Question 18

Bioassay

Answer 18

A test for biological activity.

Question 19

Cyanohydrins

Answer 19

A family of compounds that decompose in aqueous solutions to form squared cyanide ions CN- (aq). (eg. glyceronitrile)

Question 20

intramolecular forces

Answer 20

Bonds between atoms within molecules - covalent bonds.

Question 21

intermolecular forces

Answer 21

Forces of attraction between molecules.

Question 22

molecular ion

Answer 22

Ion formed when one electron is ejected during electron impact ionization mass spectrometry

Question 23

constitutional isomer, structural isomer

Answer 23

Substances with the same formula but different connectivity.

Question 24

condensed formula

Answer 24

Shows particular groupings of atoms in molecules.

Question 25

fragment ions

Answer 25

Formed in mass spectroscopy by the breaking up of atoms during collisions.

Question 26

absorption spectrum

Answer 26

A plot of radiation energy versus the percentage of radiation transmitted.

Question 27

wavenumber

Answer 27

reciprocal of wavelength

Question 28

frequency

Answer 28

speed of light/wavelength | c*v (speed of light * wavenumber)

Question 29

functional group

Answer 29

Commonly occurring groups of atoms with particular connectivity patterns, in molecular compounds