eQuizShow

Chapter 2 Definitions - A

Doctor Hu Who??

Question:

Refers to a result that is statistically unlikely to have occurred by chance alone.

 


Answer:

Statistically significant



Question:

Number of protons in the atomic nucleus, determines the element

 


Answer:

Atomic Number



Question:

Electrical property; opposite charges attract and like charges repel.

 


Answer:

Charge



Question:

Negatively charged subatomic particle

 


Answer:

Electron



Question:

A pure substance that consist only of atoms with the same number of protons.

 


Answer:

Element



Exterminate!

Question:

Forms of an element that differ in the number of neutrons their atoms carry.

 


Answer:

Isotopes



Question:

Of an isotope, the total number of protons and neutrons in the atomic nucleus.


Answer:


Mass number



Question:

Uncharged subatomic particle in the atomic nucleus


Answer:

Neutron



Question:

Core of an atom; occupied by protons and neutrons.


Answer:

Nucleus



Question:

Positively charged subatomic particle that cocurs in the nucleus of all atoms

 


Answer:

Proton



Timey Wimey

Question:

Process by which atoms of a radioisotope emit energy and subatomic particles when their nucleus spontatneously breaks up


Answer:

Radioactive decay



Question:

Isotope with an unstable nucleus.


Answer:

Radioisotope



Question:

Atom with an unpaired electron.


Answer:

Free radical



Question:

Atom or molecule that carries a net charge.


Answer:

Ion



Question:

Model of electron distribution in an atom.

 


Answer:

Shell model



Geronimo!

Question:

A substance that can be traced via its detectable component. 


Answer:

Tracer



Question:

An attractive force that arises between two atoms when their electrons interact. Links atoms into molecules.


Answer:

Chemical bond



Question:

Molecule that has atoms of more than one element.


Answer:

Compound



Question:

Type of chemical bond in which two atoms share a pair of electrons.


Answer:

Covalent bond



Question:

Type of chemical bond in which a strong mutual attraction links ions of opposite charge.

 


Answer:

Ionic bond



Bowties are cool

Question:

Any separation of charge into distinct positive and negative regions.


Answer:

Polarity



Question:

Propery of a substance that arises from the tendency of its molecultes to resist separating from one another.


Answer:

Cohesion



Question:

Amount of solute per unit volume of solution.


Answer:

Concentration



Question:

Transition of a liquid to a vapor.


Answer:

Evaporation



Question:

Attraction between covalently bonded hydrogen atom and another atom taking part in a separate covalent bond.


Answer:

Hydrogen bond