Vocab Quiz

Question 0

The smallest unit of matter that retains the properties of an element

Answer 0

Atom

Question 1

A negatively charged ion

Answer 1

Anion

Question 2

An atoms central core, containing protons and neutrons

Answer 2

Atomic nucleus

Question 3

The number of protons in the nucleus of an atom, unique for each element and designated by a subscript to the left of the elemental symbol

Answer 3

Atomic number

Question 4

An approximation of the total mass of an atom. Protons+neutrons

Answer 4

Atomic weight(mass)

Question 5

An ion with a positive charge, produced by the loss of one or more electrons

Answer 5

Cation

Question 6

An attraction between two atoms, resulting from a sharing of outer-shell electrons or the presence of opposite charges on the atoms. The bonded atoms gain complete outer electron shells

Answer 6

Chemical bond

Question 7

In a reversible chemical reaction, the point at which the rate of the forward reaction equals the rate of the reverse reaction

Answer 7

Chemical equilibrium

Question 8

A process leading to chemical changers in matter; involves the making and/or breaking of chemical bonds

Answer 8

Chemical reaction

Question 9

A substance consisting of two or more elements in a fixed ratio

Answer 9

Compound

Question 10

A type of strong chemical bond in which two atoms share one or more pairs of valence electrons

Answer 10

Covalent bond

Question 11

When two atoms form a molecule by sharing two pairs of valence electrons

Answer 11

Double bond

Question 12

An energy level represented as the distance of an electron from the nucleus of an atom

Answer 12

Electron shell

Question 13

A subatomic particle with a single negative charge. One or more move around the nucleus of an atom

Answer 13

Electron

Question 14

The attraction of an atom for the electrons of a covalent bond

Answer 14

Electronegativity

Question 15

Any substance that cannot be broken down to any other substance

Answer 15

Element

Question 16

Any of several different states of potential energy for electrons in an atom

Answer 16

Energy level

Question 17

The capacity to do work (to move matter against an opposing force)

Answer 17

Energy

Question 18

A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule

Answer 18

Hydrogen bond

Question 19

The attraction between different kind of molecules

Answer 19

Adhesion

Question 20

The energy of motion, which is directly related to the speed of that motion. Moving matter does work by imparting motion to other matter

Answer 20

Kinetic energy

Question 21

A molecule (such as water) with opposite charges on opposite sides

Answer 21

Polar molecule

Question 22

A substance that is dissolved in a solution

Answer 22

Solute

Question 23

A liquid that is a homogeneous mixture of two or more substances

Answer 23

Solution

Question 24

The dissolving agent of a solution. Water Is the most versatile known

Answer 24

Solvent

Question 25

The amount of heat that must be absorbed or lost for 1 g of a substance to change it's temperature by 1*C

Answer 25

Specific heat

Question 26

Having an affinity for water

Answer 26

Hydrophilic

Question 27

Having an aversion to water; tending to coalesce and form droplets in water

Answer 27

Hydrophobic

Question 28

An atom that has gained or lost electrons, thus acquiring a charge

Answer 28

Ion

Question 29

A chemical bond resulting from the attraction between oppositely charged ions

Answer 29

Ionic bonds

Question 30

A compound resulting from the formation of an ionic bond; also called a salt

Answer 30

Ionic compound

Question 31

One if several atomic forms if an Element, each containing a different number of neutrons and thus differing in atomic mass

Answer 31

Isotope

Question 32

The sum of the number if protons and neutrons in an atoms nucleus

Answer 32

Mass number

Question 33

Anything that takes up space and has mass

Answer 33

Matter

Question 34

Two or more atoms held together by covalent bonds

Answer 34

Molecule

Question 35

An electrically neutral particle, found In the nucleus

Answer 35

Neutron

Question 36

A type of bond in which electrons are shared equally between two atoms of similar electronegativity

Answer 36

Nonpolar covalent bond

Question 37

The energy stored by matter as a result of its location or spatial arrangement

Answer 37

Potential energy

Question 38

An ending material in a chemical reaction

Answer 38

Product

Question 39

A Subatomic particle with a single positive electrical charge, found in nucleus

Answer 39

Proton

Question 40

unstable; the nucleus decays spontaneously, giving off detectable particles and energy

Answer 40

Radioactive isotope

Question 41

A starting material in a chemical reaction

Answer 41

Reactant

Question 42

A compound resulting from the formation of an ionic bond; also called an ionic compound

Answer 42

Salt

Question 43

Indispensable for life but required in extremely minute amounts

Answer 43

Trace elements

Question 44

An electron in the outer shell

Answer 44

Valence electron

Question 45

The outermost energy shell of an atom, containing the valence electrons involved in chemical reactions

Answer 45

Valance shell

Question 46

The bonding capacity of an atom, generally equal to the number of unpaired electrons In the outer shell

Answer 46

Valance

Question 47

Weak attractions between molecules or parts of molecules that are brought about by localized charge fluctuations

Answer 47

Van der Waals interactions

Question 48

A measure of hydrogen ion concentration equal to the negative log of a hydronium ion and ranging in value from 0 to 14

Answer 48

pH

Question 49

A measure of how difficult it is to stretch or break the surface of a liquid

Answer 49

Surface tension

Question 50

A measure of the intensity of heat in degrees, reflecting average kinetic energy of the molecules

Answer 50

Temperature

Question 51

The binding together of like molecules, often by hydrogen bonds

Answer 51

Cohesion

Question 52

The property of a liquid whereby the surface becomes cooler during evaporation, owing to a loss of highly kinetic molecules to the gaseous state

Answer 52

Evaporative cooling

Question 53

The quantity of heat a liquid must absorb for 1 g of it to be converted from the liquid to the gaseous state

Answer 53

Heat of vaporization

Question 54

A single proton with a charge of 1+ the dissociation of a water molecule leads to the generation of it

Answer 54

Hydrogen ion